Devam Alun And Catalyst is based in India and lists aluminium sulphate products on Global Trade Plaza. The company offers non-ferric alum and ferric/non-ferric alum grades in lump and powder forms. Mesh sizes include 30, 60, 80 and finer meshes, with lumps sized 1–4. Both products are packed in 50 kg units and are described as useful for water treatment and construction chemical applications.