Treatment of chemicals, namely, purification of silicon-based and/or chlorine-based chemicals; Application of protective coatings to optical fibers and semiconductors; [ metal treatment;] waste treatment; water treatment; [ soil treatment; paper treatment; ] and treatment of rubbers and polymers; [ Bookbinding; film development and reproduction of photographs; wood-working; surface refinement or anodization; enameling, galvanization, phosphatising, chromium-plating, zinc-plating, textile fireproofing, edging, shrinking and finishing; bleaching of cloth, clothing, fabric and textiles; dyeing of clothing, fabric and fur; recycling of residue from fossil fuel power plants and of waste; incineration of residue from fossil fuel power plants and of waste; production of energy and production of heat by generating electricity; Demolition services; sand blasting; Custom manufacture of insulation for the construction industry]