久久国产精品久久w女人SPa-成人毛片免费无码九九精品-亚洲国产精品成AV人不卡无码-国产一级特黄aaa大片

Characteristics: White or almost white crystalline powder
Purity: ≥99%
Melting Point: ≥240℃
Loss on drying: ≤0.5%
Package: 25kg drum
Use: Steroid hormone intermediate, and progestational hormones