燕山石化;低密度高压聚乙烯(ldpe) ;1c7a 1c7as ld100ac 1i2a-1 1i50a 1i60a ld100bw ld607(m187) ld605 ld608 ld450(m1840) 高密度低压聚乙烯(hdpe); 7600m 6100m l501(5000s) 2300xm b5703(5200b) m572(3000je) 聚丙烯(pp); k1008 k7005 k4912 k1118 k7735h b8101 b4808 b4902 ppr4400 ppr4220 k8303 k7726h k9829h k7780 k7100 k7760 k9026 2101m 三元共聚聚丙烯;c5908 c5608 f5006 f5606 超高分子量聚乙烯 9200cg 9300cg 9400cg 9100cg 9080cg 合成橡胶 sbs4402 防水卷材 sbs4303