HEDERA

Industrial silicon; silicon; silica gel; clarifying agents; filtering materials of chemical substances; chemicals for industry; detergents for industrial use; decolorants for industrial purposes; ion exchangers [chemicals]; acid proof chemical compositions; carbon for filters; chemical preparations for analyses in laboratories, other than for medical or veterinary purposes; chemical substances for analyses in laboratories, other than for medical or veterinary purposes; chemical preparations for scientific purposes, other than for medical or veterinary use.