We're using 
DMSO (Dimethyl Sulfoide) - 67-68-5 Industrial Grade Clear colorless liquid over 18.3 degree 
TCCA 90% Trichloroisocyanuric Acid Chlorine Tablet Granular Powder for swimming pool - 87-90-1 
Magnesium Sulphate
Isopropyl alcohol - 67-63-0 Industrial Grade
Potassium Meta Bi Sulphite
Acetic acid/GAA - 64-19-7 Industrial Grade
RO Antiscalant
Titanium Dioxide Lab Gra
Polyelectrolyte Powder
Melamine - 108-78-1 industrial grade
Ethyl acetate - 141-78-6 Industrial Grade
Butyl Acetate
Formic Acid
Acetone
Xylene Solvent
Toluene Agent Plasticize
Hydrochloric Acid
Titanium Dioxide Lab Gra
Phosphoric Acid
We are importing from China 3-4 month once.