Singing bowls

Thermoplastic materials such as cellulose acetate, cellulose acetobutyrate, polyvinyl chloride, polyethylene, polystyrene, polypropylene, polyisobutylene or a combination of one or several of these substances or a combination of one or several of these substances to be applied to several other substances such as paper, natural, artificial or synthetic tissues, aluminium and other light metals in sheets; pechloride, lithopone, Xanthates, dimethylformamide, choline chloride, Maleic anhydride, naphtalene, anhydride, methyl, sodium fluosilicate, silicones, all being used in the following industires, mining extraction, treatment of water, synthetic fibers, photo-chemistry, synthetic resins, textiles, tannery, detergents, dye stuffs, plasticizers; hydrochloric acid, hydrofluoric acid,l chlorosulfonic acid, fluosilicic acid, nitric acid, sulfuric acid, ammonia, anthracene, benzene, ammonium carbonate, ammonium oxychloride, ethylene oxide, hydrogen peroxide, sodium triphosphate, sodium pyrophosphate, ammonium sulfate, ferric sulfate, carbon disulfide, toluene, triethanolamine, trimethylamine, sodium tripolyphosphate, xylene