Ammonium Sulphate Crystal

*HS CODE: 31022100
*N, Content:≥21.0%
*H2SO4:＜0.03%
*Fe:＜0.007%
*As:＜0.0005%
*Pb:＜0.005%
*Water Insoluble:＜0.01%
*H2O:＜0.2%