5603921010 Chinese tariffs HS code 25g<the wight per square meter is less than or equal to 70g of impregnated polymers of ethylene, including battery diaphragm base fabricimpregnated, coated or laminated coating
25g<the wight per square meter is less than or equal to 70g of impregnated polymers of ethylene, including battery diaphragm base fabricimpregnated, coated or laminated coating