R&D, production, sales and technical testing and consulting services of quenching media, anti-rust agents, cleaning agents, blackening agents, surface treatment agents, cutting, grinding, metal forming processing media, industrial greases, lubricants and additive raw materials, complete sets of equipment and instruments related to industrial media; processing of automobiles, motorcycles and mechanical parts; house leasing; self-operated and agent import and export business of various commodities and technologies.