乙烯EthyleneEtheneEthylene聚乙烯粉, 低密度, 500微米LDPEPolyethylene, low density, ≤400 micron聚乙烯, UHMWPolyethylene, UHMW低密度聚乙烯, ≤ 400 微米Polyethylene powder, low density, 500 micronPolyethylene, high density高密度聚乙烯聚乙烯, 低密度, 1000微米Polyethylene, low density, 1000 micronH2C=CH2EthyleneetheneAethenAethylenR-1150etheneCH2=CH2