牌号8440用途级别注塑级厂家(产地)美国杜邦供应POE塑胶原料(1)POE美国杜邦7256.7270.7340.7467.8150.8200(2)POE美国杜邦8401.8402.8480.8999(3)POE美国陶氏8999,8150,5501.8003.8100.8180.8407(4)POE美国埃克森5061.5062.5171.5371.VM-6202(5)POE新加坡三井DF710.DF740.AOC.DF810.DF840)