sigmaaldrich
聚(乙二醇)
聚环氧乙烷
5G
聚乙二醇 溶液
Kollisolv ? PEG E 400
Kollisolv? PEG E 300
Polyethylene glycol 200
Polyethylene glycol 600
聚乙二醇1000
Polyethylene glycol 1500