EPDM塑胶原料(1)EPDM荷兰D***:K2340A.K4802.K512.K520.K5508.K778Z.K8340A(2)EPDM美国陶氏3072.3660.3745.4520.4640.47085.245(3)EPDM镇江南帝N1051.N1052)