PolyethylenimineHydrochloridePolysciences24765￥120000去看看未来生物科研试剂耗材发布了Polysciences 24765-1 PEI MAX Polyethylenimine HydrochloridePolyethyleniminePolysciencesLinearMW2500￥98000去看看未来生物科研试剂耗材发布了Polysciences 23966-1 Polyethylenimine Linear MW2500 PEI 25K
