3901401090 Chinese tariffs HS code Ethylene propylene copolymer (EPDM) has a specific gravity of less than 0.94, and the content of ethylene monomer unit is higher than that of propylene monomer unit
Ethylene propylene copolymer (EPDM) has a specific gravity of less than 0.94, and the content of ethylene monomer unit is higher than that of propylene monomer unit