b'STAATSOLIE MAATSCHAPPIJ SURINAME N.V.NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS FOR THE YEAR ENDED DECEMBER 31, 2020 (Continued)6.3 INVENTORIES(X US$ 1,000) 2020 2019Petroleumproducts 20,800 24,934Materialsandsupplies 83,112 87,306Ordered goods 4,911 2,897Unfinishedgoods 1,632 - 110,455 115,137 In2020,US$916(2019:NIL)wasaddedtothe ThedecreaseininventoryrelatestoPetroleumprovision for obsolete inventories.productsandMaterial&Supplies.Petroleumproducts decreases because of the oil prices During2020,US$298(2019:US$366)was (petroleum products are valued at the lower of cost recognizedasanexpenseforinventoriescarried andnetrealizablevalue).atcost.Thisisrecognizedincostofsales.6.4 TRADE PAYABLES, ACCRUALS AND OTHER LIABILITIES (X US$ 1,000) 2020 2019Tradepayables 82,392 141,697Accrued and other liabilities 69,636 43,025 152,028 184,722 Termsandconditionsoftheabovefinancialliabilities:Tradepayablesarenon-interestbearingandarenormallysettledon30-dayterms.Accrued and other liabilities are non-interest bearing. 149'