With the growth of the national economy, cars have reached thousands of households, but domestic vehicle maintenance costs, pollution emissions, traffic accidents, repairs, etc. Are much higher than developed in europe and the united states. The department introduced foreign technology to produce the dynadd (dina) series of vehicle energy-saving conservation products, which were developed by a number of scientific studies from china and foreign countries for special use environments on roads, domestic oils and cars: petrol additives, diesel additives, carbon cleaning agents, brand lifting agents; lube oil series products: all-out engine protections, engine-free cleaning agents, nanometal engine restorations, engine resistance, clean factor protections; and other conservation products: brake oil protection, gear tanker oil protection, automatic transformer tank oil protections, tail gas elves (triple-catalytic cleaning agent), oil-sting mouth cleaning agents. Extensive application to diesel, gasoline and gas engine engines. Dynadd (dena) products have been in use in the military industry for more than 20 years, such as rocket-launching fuel additives; and in the military engineering field such as fighter aircraft, tanks and field vehicles。