伊人高清国产在线|久草电影网制服视频电影网|国产又大又粗又爽又黄|亚洲日韩精品视频一区二区

Characteristics: White or almost white crystalline powder
Purity: ≥98%
Melting Point: ≥202℃
Loss on drying: ≤0.5%
Package: 25kg drum
Use: Steroid hormone intermediate, and progestational hormones