国产美女被遭强高潮视频_亚洲成av人片在线播放_免费看三级中文字幕_欧美黑人大粗大一级片

Welcome to the website of Jiande Langfeng Chemical Co., Ltd. Tel: 0086(571)64725862

Tel: 0086(571)64725862

CONTACT US

Jiande Langfeng Chemical Co., Ltd

Address: No. 76, wanggeng Road, Xin'anjiang street, Jiande City, Zhejiang Province

Contact: Mr.Ye or Miss Li

TEL: 0086(571)64725862

        +86 180 5715 9168

E-mail: 1016080092@qq.com

              zjjdxlhx@163.com

LOCATION:HOME » PRODUCT » PRODUCT CENTER

2.2- Difluoroethanol

  

2,2- difluoroethanol is a chemical substance. It is prepared by the reaction of 2,2- dichloroethanol and potassium fluoride in high boiling point ethylene glycol solvents, or by the addition of ethylene oxide and hydrogen fluoride.