astm d6400是什么标准？
ASTM D6400 Standard Specification for Labeling of Plastics Designed to be Aerobically Composted in Municipal or Industrial Facilities专为市政或工业设施的可堆肥化塑料说明：ASTM是美国材料与试验协会（American Society for Testing and Materials,ASTM）标准。
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