1.1 This standard specifies the nomenclature for the thermoplastic material polypropylene (PP). This nomenclature can be used as the basis for specifications. …
JIS K 6921-1:1997 history
2018JIS K 6921-1:2018 Plastics -- Polypropylene (PP) moulding and extrusion materials -- Part 1: Designation system and basis for specifications
1997JIS K 6921-1:1997 Plastics -- Polypropylene (PP) moulding and extrusion materials -- Part 1: Designation system and basis for specifications