Graphite electrodes with nipples, electrodes, graphite electrodes
Talc, kaolin, graphite and hardwood charcoal
Metal and chemical products such as lithium carbonate, graphite, carbon black, and caustic soda etc...
Antimoney, lead zinc, iron, manganese, aluminium, gabbro, chromite, pyrophyllite, salt, graphite, limestone, soapstone, all precious stones, china clay, fire clay, silica sand and gypsum
