Rubber, namely, natural rubber, crude rubber; silicone elastomer and derivatives thereof, in the semi-finished state, namely, silicone rubber, silicone sealants; semi-processed artificial and synthetic resins; semi-processed plastics; seals, namely, non-metal sealing rings for use as connection seals; semi-finished gum; insulators, namely, silicone electrical and electronic insulators; latex for industrial use; non-metallic pipe couplings; sleeves of rubber or silicone elastomer for heat insu...