| Significant accounting policies 2.1    Statement of compliance These financial statements have been prepared in accordance with the Indian Accounting Standards (‘Ind AS ’) prescribedunder Section 133 of the Companies Act, 2013 (“the Act”) read with Rule 3 of the Companies (Indian Accounting Standards)
 Rules, 2015 (as amended)
 2.2    Basis of preparation (i)    Historical Cost Convention These financial statements have been prepared on the historical cost basis except for certain financial instruments anddefined benefit plans that are measured at fair values at the end of each reporting period, as explained in the accounting
 policies below. Historical cost is generally based on the fair value of the consideration given in exchange for goods and
 services.
 (ii)    Fair Value Measurement Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction betweenmarket participants at the measurement date, regardless of whether that price is directly observable or estimated using another
 valuation technique. In measuring fair value of an asset or liability, the Company takes into account those characteristics of the
 assets or liability that market participants would take into account when pricing the asset or liability at the measurement date.
 In addition, for financial reporting purposes, fair value measurements are categorised into Level 1, 2 or 3 based on thedegree to which the inputs to the fair value measurements are obser vable and the significance of the inputs to the fair value
 measurement in its entirety, which are described as follows:
 •    Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the entity can accessat the measurement date;
 •    Level 2 inputs are inputs, other than quoted prices included within Level 1, that are observable for the asset or liability,either directly or indirectly; and
 •    Level 3 inputs are unobservable inputs for the asset or liability. (iii)    Functional and presentational currency These financial statements are presented in Indian Rupee (INR) which is also the functional currency. (iv)    Rounding off amounts All amounts disclosed in the financial statements have been rounded off to the nearest rupees in Lakhs, as per the requirementsof Schedule III of the Act, unless otherwise stated.
 (v)    Use of estimates and judgements The preparation of financial statements in conformity with Ind AS requires the management to make judgements, estim atesand assumptions that affect the application of accounting policies and the reported amounts of assets, liabilities, income and
 expenses. Actual results may differ from these estimates. Estimates and underlying assumptions are reviewed on an ongoing
 basis. Revisions to accounting estimates are recognised in the period in which the estimates are revised and in any future
 period affected.
 In particular, following are the significant areas of estimation, uncertainty and critical judgements in applying accounting policies that have the most significant effect on the amounts recognised in standalone financial statements: a.    Assessment of useful life of property, plant and equipment and intangible asset - refer below note 2.5. b.    Recognition and estimation of tax expense including deferred tax - refer note 2.30 c.    Estimation of obligations relating to employee benefits: key actuarial assumptions - refer note 2.20 d.    Fair value measurement refer above note 2.2 (ii) e.    Recognition and measurement of provision and contingency - refer note 2.35 f.    Estimated impairment of financials Assets-refer below note.2.11 2.3    Current versus non-current classification The Company presents assets and liabilities in the balance sheet based on current/non-current classification. An asset is treated as current when it is: •    Expected to be realised or intended to be sold or consumed in the normal operating cycle; •    Held primarily for the purpose of trading; •    Expected to be realised within twelve months after the reporting period; or •    Cash or cash equivalent unless restricted from being exchanged or used to settle a liability for at least twelve months afterthe reporting period.
 All other assets are classified as non-current. A liability is current when: •    It is expected to be settled in the normal operating cycle; •    It is held primarily for the purpose of trading; •    It is due to be settled within twelve months after the reporting period; or •    There is no unconditional right to defer the settlement of the liability for at least twelve months after the reporting period. All other liabilities are classified as non-current. The Company has deemed its operating cycle as twelve months for the purpose of current/non- current classification. 2.4    Revenue recognition Revenue is measured at the fair value of consideration received or receivable. a)    The Company recognizes revenue from sale of goods when it satisfies a performance obligation in accordance withthe provisions of contract with the customer. This is achieved when it no longer retains control over the goods sold, the
 amount of revenue can be measured reliably, it is probable that the economic benefits associated with the transaction will
 flow to the Company and the costs incurred or to be incurred in respect of the transaction can be measured reliably. Sale
 of goods is recognised net of taxes collected on behalf of third parties.
 The performance obligation in case of sale of goods is satisfied at a point in time i.e., when the material is shipped to thecustomer or on delivery to the customer, as may be specified in the contract.
 b)    Inter unit transfers are adjusted against respective expenses. c)    Interest income from a financial asset is recognised when it is probable that the economic benefits will flow to theCompany and the amount of income can be measured reliably. Interest income is accrued on a time proportion basis,
 by reference to the principal outstanding and the effective interest rate (‘EIR’) applicable, which is the rate that exactly
 discounts estimated future cash receipts through the expected life of the financial assets to that asset’s net carrying
 amount on initial recognition.
 d)    Dividend income from investments in equity shares and mutual funds is recognised when the right to receive the dividendis established.
 e)    Export Incentives are recognised as per schemes specified in foreign Trade Policy, as amended from time to time, onaccrual basis in the year when right to receive as per terms of the scheme is established and are accounted to the extent
 there in no uncertainty about its ultimate collection.
 f)    Insurance Claim is accrued in the year when the right to receive is established and is recognised to the extent there is nouncertainty about its ultimate collection.
 2.5    Property, Plant and Equipment Property, plant and equipment are measured at cost less accumulated depreciation and impairment losses, if any. Costincludes expenditures directly attributable to the cost of acquisition of the asset. Cost includes related taxes, duties, freight,
 insurance etc., attributable to acquisition and installation of assets and borrowing cost incurred up to the date of commencing
 operations, but excludes duties and taxes that are recoverable from taxing authorities.
 Subsequent expenditure relating to property, plant and equipment is capitalised only when it is probable that future economicbenefits associated with these will flow to the Company and the cost of the item can be measured reliably.
 The cost of property, plant and equipment not available for use before such date are disclosed under capital work- in-progress. An item of property, plant and equipment is derecognised upon disposal or when no future economic benefits are expectedto arise from the continued use of the asset. Any gain or loss arising on the disposal or retirement of an item of property,
 plant and equipment is determined as the difference between the sales proceeds and the carrying amount of the asset and is
 recognised in the profit or loss.
 Upon transition to Ind AS, the Company has decided to continue with the carrying value of all its property, plant and equipmentrecognised as at 1st April 2016 measures as per the previous GAAP and use that carrying value as the deemed cost of
 property, plant and equipment.
 The Company has adopted the useful life as specified in Schedule II to the Act, except for certain assets for which theuseful life has been estimated based on the Company’s past experiences in this regard, duly supported by technical advice.
 Accordingly, the useful lives of tangible assets of the Company which are different from the useful lives as specified by
 Schedule II are given below:
 Buildings    -    30 Yrs Plant & Machineries    -    20 Yrs Furniture & Fittings    -    10 Yrs Vehicles    -    8 Yrs Office Equipments    -    5 Yrs Computers & Electronic Devices    -    3 Yrs Refer Note 2.01 for detailed classification of the Company’s assets under various heads. 2.6    Intangible Assets Intangible assets are recognised when the asset is identifiable, is within the control of the Company, it is probable that thefuture economic benefits that are attributable to the asset will flow to the Company and cost of the asset can be reliably
 measured.
 Intangible assets with finite useful lives are carried at cost less accumulated amortisation and accumulated impairmentlosses. Amortisation is recognised on a straight line basis over their estimated useful lives, if any other method which reflects
 the pattern in which the asset’s future economic benefits are expected to be consumed by the entity cannot be determined
 reliably. The estimated useful life and amortisation method are reviewed at the end of each reporting period, with the effect of
 any changes in estimate being accounted for on a prospective basis.
 For transition to Ind AS, the Company had elected to continue with the carrying value of all its intangible assets recognisedas at the transition date, measured as per the previously applicable Indian GAAP and used that carrying value as its deemed
 cost as at the transition date.
 2.7    Borrowing Costs Borrowing costs that are directly attributable to the acquisition, construction or production of a qualifying asset (net of incomeearned on temporary deployment of funds) are added to the cost of those assets, until such time as the assets are substantially
 ready for their intended use or sale. All other borrowing costs are recognised as an expense in the period in which they are
 incurred.
 A qualifying asset is an asset that necessarily takes a substantial period of time to get ready for its intended use or sale. 2.8    Inventories Inventories are valued at the lower of cost and net realisable value. Cost of inventories is determined on the ‘weighted average’ basis and comprises expenditure incurred in the normal course ofbusiness for bringing such inventories to their present location and condition and includes, wherever applicable, appropriate
 overheads.
 Net realisable value is the estimated selling price in the ordinary course of business less the estimated costs of completionand the estimated costs necessary to make the sale.
 2.9    Financial Instruments A financial instrument is any contract that gives rise to a financial asset of one entity and a financial liability or equity instrumentof another entity.
 Financial Assets Classification The Company classifies financial assets as subsequently measured at amortised cost, fair value through other comprehensiveincome or fair value through profit or loss on the basis of its business model for managing the financial assets and the
 contractual cash flow characteristics of the financial asset.
 Initial recognition and measurement All financial assets are recognised initially at fair value plus, in the case of financial assets not recognised at fair value throughprofit or loss, transaction costs that are attributable to the acquisition of the financial asset.
 Subsequent measurement of financial assets are dependent on initial categorisation. For impairment purposes, significantfinancial assets are tested on an individual basis and other financial assets are assessed collectively in groups that share
 similar credit risk characteristics.
 Financial assets measured at amortised cost Financial assets are measured at amortised cost when asset is held within a business model, whose objective is to holdassets for collecting contractual cash flows and contractual terms of the asset give rise, on specified dates, to cash flows that
 are solely payments of principal and interest.
 Financial assets measured at fair value through other comprehensive income (FVTOCI) Financial assets under this category are measured initially as well as at each reporting date at fair value. Fair value movementsare recognised in the other comprehensive income.
 Financial assets measured at fair value through profit or loss (FVTPL) Financial assets under this category are measured initially as well as at each reporting date at fair value with all changesrecognised in profit or loss.
 Cash and cash equivalents The Company considers all highly liquid financial instruments, which are readily convertible into known amounts of cash, thatare subject to an insignificant risk of change in value with a maturity within three months or less from the date of purchase,
 to be cash equivalents. Cash and cash equivalents consist of balances with banks which are unrestricted for withdrawal and
 usage.
 Derecognition of financial assets A financial asset is primarily derecognised when the rights to receive cash flows from the asset have expired or the Companyhas transferred its rights to receive cash flows from the asset.
 Financial liabilities Classification The Company classifies all financial liabilities as subsequently measured at amortised cost, except for financial liabilities atfair value through profit or loss. Such liabilities, including derivatives that are liabilities, shall be subsequently measured at fair
 value.
 Initial recognition and measurement All financial liabilities are recognised initially at fair value and in the case of loans, borrowings and payables, net of directlyattributable transaction costs. Financial liabilities include trade and other payables, loans and borrowings including bank
 overdrafts and derivative financial instruments.
 Financial liabilities at fair value through profit or loss Financial liabilities at fair value through profit or loss include financial liabilities held for trading and financial liabilities designatedupon initial recognition as at fair value through profit or loss. Financial liabilities are classified as held for trading, if they are
 incurred for the purpose of repurchasing in the near term. This category also includes derivative financial instruments that are
 not designated as hedging instruments in hedge relationships as defined by Ind AS 109 - “Financial Instruments”. Separated
 embedded derivatives are also classified as held for trading unless they are designated as effective hedging instruments.
 Financial liabilities measured at amortised cost After initial recognition, interest bearing loans and borrowings are subsequently measured at amortised cost using the EIRmethod except for those designated in an effective hedging relationship.
 Amortised cost is calculated by taking into account any discount or premium and fee or costs that are an integral part ofthe EIR. The EIR amortisation is included in finance costs in the Statement of Profit and Loss. Any difference between the
 proceeds (net of transaction costs) and the redemption amount is recognised in profit or loss over the period of the borrowings
 using the EIR method. Fees paid on the establishment of loan facilities are recognised as transaction costs of the loan to the
 extent that it is probable that some or all of the facility will be drawn down.
 Trade and other payables A payable is classified as ‘trade payable’ if it is in respect of the amount due on account of goods purchased or services receivedin the normal course of business. These amounts represent liabilities for goods and services provided to the Company prior
 to the end of financial year, which are unpaid. They are recognised initially at their fair value and subsequently measured at
 amortised cost using the EIR method.
 Financial guarantee contracts Financial guarantees issued by the Company are those guarantees that require a payment to be made to reimburse theholder of the guarantee for a loss incurred by the holder because the specified debtor fails to make a payment, when due, to
 the holder in accordance with the terms of a debt instrument. Financial guarantees are recognised initially as a liability at fair
 value, adjusted for transactions costs that are directly attributable to the issuance of the guarantee. Subsequently, the liability
 is measured at the higher of the amount of loss allowance determined as per impairment requirements of Ind AS 109 and the
 amount recognised less cumulative amortisation.
 Embedded derivatives Derivatives embedded in non-derivative host contracts that are not financial assets within the scope of Ind AS 109 are treatedas separate derivatives when their risks and characteristics are not closely related to those of the host contracts and the host
 contracts are not measured at FVTPL.
 Derecognition of financial liabilities A financial liability is derecognised when the obligation under the liability is discharged or cancelled or expires. The differencebetween the carrying amount of a financial liability that has been extinguished or transferred to another party and the
 consideration paid, including any non-cash assets transferred or liabilities assumed, is recognised in profit or loss as otherincome or finance costs.
 2.10    Derivative financial instruments The Company enters into a variety of derivative financial instruments to manage its exposure to interest rate and foreignexchange rate risks, including foreign exchange forward contracts, interest rate swaps and cross currency swaps.
 Derivatives are initially recognised at fair value at the date the derivative contracts are entered into and are subsequentlymeasured to their fair value at the end of each reporting period. The resulting gain or loss is recognised in the Statement of
 Profit and Loss immediately unless the derivative is designated as hedging instrument.
 2.11    Impairment of financial assets: The Company applies the expected credit loss model for recognising impairment loss on financial assets measured atamortised cost, debt instruments at FVTOCI, lease receivables, trade receivables, other contractual rights to receive cash or
 other financial asset, and financial guarantees not designated as at FVTPL.
 Expected credit losses are the weighted average of credit losses with the respective risks of default occurring as the weights.Credit loss is the difference between all contractual cash flows that are due to the Company in accordance with the contract
 and all the cash flows that the Company expects to receive (i.e. all cash shortfalls), discounted at the original effective interest
 rate (or credit-adjusted effective interest rate for purchased or originated credit-impaired financial assets). The Company
 estimates cash flows by considering all contractual terms of the financial instrument (for example, prepayment, extension, call
 and similar options) through the expected life of that financial instrument.
 The Company measures the loss allowance for a financial instrument at an amount equal to the lifetime expected credit lossesif the credit risk on that financial instrument has increased significantly since initial recognition. If the credit risk on a financial
 instrument has not increased significantly since initial recognition, the Company measures the loss allowance for that financial
 instrument at an amount equal to 12-month expected credit losses. 12-month expected credit losses are portion of the life¬
 time expected credit losses and represent the lifetime cash shortfalls that will result if default occurs within the 12 months after
 the reporting date and thus, are not cash shortfalls that are predicted over the next 12 months.
 If the Company measured loss allowance for a financial instrument at lifetime expected credit loss model in the previous period,but determines at the end of a reporting period that the credit risk has not increased significantly since initial recognition due
 to improvement in credit quality as compared to the previous period, the Company again measures the loss allowance based
 on 12-month expected credit losses.
 When making the assessment of whether there has been a significant increase in credit risk since initial recognition, the groupuses the change in the risk of a default occurring over the expected life of the financial instrument instead of the change in
 the amount of expected credit losses. To make that assessment, the group compares the risk of a default occurring on the
 financial instrument as at the reporting date with the risk of a default occurring on the financial instrument as at the date of
 initial recognition and considers reasonable and supportable information, that is available without undue cost or effort, that is
 indicative of significant increases in credit risk since initial recognition.
 2.12    Leases The determination of whether an arrangement is, or contains a lease is based on the substance of the arrangement at theinception of the lease. The arrangement is, or contains a lease if fulfilment of the arrangement is dependent on the use of a
 specific asset or assets or the arrangement conveys a right to control the use of the asset or assets, even if that right is not
 explicitly specified in an arrangement.
 The Company has applied Ind AS 116 from 1st April, 2019 onwards using the modified retrospective approach. a) Arrangements where the Company is the lessee The company recognises a right-of-use asset and a lease liability at the lease commencement date. The right-of-use asset isinitially measured at cost, which comprises the initial amount of the lease liability adjusted for any lease payments made at or
 before the commencement date, plus any initial direct costs incurred and an estimate of costs to dismantle and remove the
 underlying asset or to restore the underlying asset or the site on which it is located, less any lease incentives received.
 The right-of-use asset is subsequently depreciated using the straight-line method from the commencement date to the earlierof the end of the useful life of the right-of-use asset or the end of the lease term. The estimated useful lives of right-of-use
 assets are determined on the same basis as those of property and equipment. In addition, the right-of-use asset is periodicallyreduced by impairment losses, if any, and adjusted for certain re-measurements of the lease liability.
 The lease liability is initially measured at the present value of the lease payments that are not paid at the commencementdate, discounted using the interest rate implicit in the lease or company’s incremental borrowing rate. The lease liability is
 measured at amortised cost using the effective interest method. It is remeasured when there is a change in future lease
 payments.
 For short-term and low value leases are classified as operating leases. Payments made under operating leases are recognisedin the Statement of Profit and Loss on a straight-line basis over the lease term.
 b) Arrangements where the Company is the lessor Rental income from operating leases is generally recognised on a straight-line basis over the lease term. Where the rentalsare structured solely to increase in line with expected general inflation to compensate for the Company’s expected inflationary
 cost increases, such increases are recognised in the year in which such benefits accrue.
 2.13    Foreign currency transactions and translations Transactions in foreign currencies are translated to the functional currency of the Company (i.e. INR) at exchange rates at thedates of the transactions. Monetar y assets and liabilities denominated in foreign currencies at the reporting date, except for
 those derivative balances that are within the scope of Ind AS 109 - “Financial Instruments”, are translated to the functional
 currency at the exchange rate at that date and the related foreign currency gain or loss are recognised in the Statement of
 Profit and Loss.
 Foreign exchang e dif ferences re g ard e d as an adjustment to interest costs are recognised in the Statement of Profit andLoss. Realised or unrealised gain in respect of the settlement or translation of borrowing is recognised as an adjustment to
 interest cost to the extent of the loss previously recognised as an adjustment to interest cost.
 2.14    Employee benefits a)    Employee benefits in the form of Provident Fund, Pension Fund, Superannuation Fund and Employees State Insuranceare defined contribution plans. The Company recognizes contribution payable to a defined contribution plan as an
 expense, when an employee renders the related service. If the contribution payable to the scheme for services received
 before the balance sheet date exceeds the contribution already paid, the contribution payable to the scheme is recognised
 as a liability after deducting the contribution already paid. If the contribution already paid exceeds the contribution due for
 services received before the balance sheet date, the excess is recognised as an asset to the extent that the pre-payment
 will lead to, for example, a reduction in future payment or a cash refund.
 b)    Gratuity liability is defined benefit plans. The cost of providing benefits under the defined benefit plans is determined usingthe projected unit credit method, with actuarial valuations being carried out at the end of each annual reporting period.
 Remeasurements of the net defined benefit liability/asset comprise:
 i)    actuarial gains and losses; ii)    the return on plan assets, excluding amounts included in net interest on the net defined benefit liability/asset; and iii)    any change in the effect of the asset ceiling, excluding amounts included in net interest on the net defined benefitliability/asset.
 Remeasurements of net defined benefit liability/asset are charged or credited to other comprehensive income. c)    Compensated absences is other long term employee benefit. The expected cost of accumulating compensated absencesis determined by actuarial valuation performed by an independent actuary at each balance sheet date using projected
 unit credit method on the additional amount expected to be paid/ availed as a result of the unused entitlement that has
 accumulated at the balance sheet date. Actuarial gains and losses are recognised in the Statement of Profit and Loss.
 2.15    Taxes on Income Income tax expense comprises of current tax and deferred tax. It is recognised in the Statement of Profit and Loss, except tothe extent that it relates to items recognised directly in equity or other comprehensive income. In such cases, the tax is also
 recognised directly in equity or in other comprehensive income.
 Current tax Current tax is the amount of tax payable on the taxable income for the year, determined in accordance with the provisions ofthe Income Tax Act, 1961.
 Deferred tax Deferred tax is recognised on temporary differences between the carrying amounts of assets and liabilities in the balancesheet and their corresponding tax bases. Deferred tax liabilities are generally recognised for all taxable temporary differences.
 Deferred tax assets are generally recognised for all deductible temporary differences and unused tax losses being carried
 forward, to the extent that it is probable that taxable profits will be available in future against which those deductible temporary
 differences and tax losses can be utilised. Such deferred tax assets and liabilities are not recognised if the temporary difference
 arises from initial recognition (other than in a business combination) of assets and liabilities in a transaction that affects neither
 the taxable profit nor the accounting profit. In addition, deferred tax liabilities are not recognised if the temporary difference
 arises from the initial recognition of goodwill.
 The carrying amount of deferred tax assets is reviewed at the end of each reporting period and reduced to the extent that it isno longer probable that sufficient taxable profits will be available to allow all or part of the asset to be recovered.
 Deferred tax liabilities and assets are measured at the tax rates that are expected to apply in the period in which the liabilityis settled or the asset realised, based on tax rates (and tax laws) that have been enacted or substantively enacted by the end
 of the reporting period.
  
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