Glycerine for industrial purposes; chemicals for industrial purposes; silicon; silicates; glycol; glycol ether; naphthalene; wetting agents; acetone; acetylene; sulfuric ethers; ethyl ether; auxiliary fluids for use with abrasives in semiconductor industry; adhesives for industrial purposes; unprocessed silicone resins; unprocessed plastics; unprocessed polybutylene terephthalate resins; argon; helium; neon; carbide; alumina; ceramic compositions for sintering in the nature of granules and powders; chemicals for the manufacture of technical ceramics