女同事醉酒被迷奷系列在线,久久精品国产亚洲AV高清热,亚洲高清国产拍精品熟女,在线观看国产最新a视频

Appearance:Light yellow crystalline

Purity:99%min.

Melting point:232.0-234.0

3-Nitrosalicylic acid :0.5% max.

Single impurity  :  0.5% max.

Residue on ignition :0.5% max.

Packing: 25kgs cardboard drum