康宁corning耗材 139-20A EP 20ml 琥珀色样品瓶,0.125”粘合盖垫,已包装,已认证 LSP EP Scientific

康宁corning耗材 139-20A EP 20ml 琥珀色样品瓶,0.125”粘合盖垫,已包装,已认证 LSP EP Scientific 72 cs