Inorganic chemical: sodium sulfite, sodium sulfide, sodium the , sodium metabisulfite, zinc oxide, sodium formate, zinc sulphate, sodium hydrosulfite, soda ash, copper sulphate
1. Lab series
2. Fine chemical series
Inorganic chemical: sodium sulfite, sodium sulfide, sodium sulphate, sodium metabisulfite, zinc oxide, sodium formate, zinc sulphate, sodium hydrosulfite, soda ash, copper ,