Beijing gold and steel supply chain management ltd., which provides, inter alia, iron alloy smelting, fire-resistant material production and marketing. The main products are: silicon, silicon-manganese alloy, manganese iron alloy, rare-earth magnesium siliacide, silicate prophylactics, carbon additives, slagicides, carbide, silicate, silicium calcium, silicate calcium, and silicate-colate chrome iron。