Promy International Group manufactures lithium chemicals, tritiated compounds, amino acids, specialty gases, stable isotopes and calcium chemicals. Our product line includes lithium acetate dihydrate, lithium carbonate, n-acetyl-l-cysteine, dl-aspartic acid, l-hydroxyproline and sulfur dioxide. We also offer hydrogen sulfide, calcium acetate, calcium silicate, calcium superphosphate and calcium d-pantothenate. ...