Poly(tetramethylene ether) Glycol 2000
https://www.sjzchem-pharm.com/shop/fm-3b-p3028-poly-tetramethylene-ether-glycol-2000-74593
https://www.sjzchem-pharm.com/web/image/product.template/74593/image_1920?unique=f421631
High molecular weight polyether glycol for polyurethane elastomers, coatings, adhesives, and specialty polymers.
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