少妇极品熟妇人妻高清性色av,最近好看的2019免费,紧窄 惨叫 稚嫩 使劲,风情韵味人妻hd

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