In downstream oil and gas, LPG: systematic examination of the extent to which a product, process or service fulfills specified requirements (footnote 10: PNS 1961:2011) [Section 3.21, Rule 3, DTI Department Administrative Order No. 22-11, Series of 2022, The New Technical Regulation Concerning the Mandatory Certification of Liquefied Petroleum Gas (LPG) Pressure Vessels, Systems, Services and Ancillary Products]
