Solemn promise: such as the majority of users to purchase and use of permanent real brand series of patent, through the national heavy vehicle inspection, due to product quality problems, good trade limited company will bear all the economic losses and legal liability. Guizhou Yong really founded in 2006 so far, the company organization of industry experts and technical staff, invest a lot of money for the existing automobile brake valve, relay valve, trailer special (bridge relay valve) and technology to improve product development emergency synchronous valve series product. Up to now, has developed a super soft brake King boutique series two PSA brake valve, two pressure relay valve, but also developed a (special trailer series) two transformer bridge synchronous relay valve, two pressure valve emergency synchronous patent products, has won five national patents, products applicable to a variety of large, medium and small trucks, buses, trailers and semi trailers. After the success of the product development through the company's three direct shop under the wing of the tens of thousands of loading test, the product with its unique performance and significant effect of the vast number of users of the recognition and praise. The brake brake valve of the existing products rough and soft, caused by tire wear, the brake system of short service life, poor effect of heavy braking problems, improve practical, solve the truck is difficult to achieve in the traditional "theory" of the light on the brake and drag soft tires, brake system the service life of the patent, solve the existing brake valve for rude braking brake brake gently a sudden death, not soft, rain and snow road braking is easy to cause the phenomenon of skidding flick truly empty brake light step on the brake soft not drag tires, heavy truck brake brake strong heavy. Product advantages: it can shorten the braking distance of nearly 40%, prolong the service life of the tire 25%, and prolong the service life of the braking system by nearly 20%. Save fuel consumption by about 3%, the patented series of products to break the traditional automotive brake valve, following the dynamic valve, trailer three relay valve, emergency synchronous valve and other technical defects, 3 patent applications covering a variety of core technologies. This series of products using more scientific use of double piston two PSA technology in improving the braking safety while both the energy saving effect, the technology has reached the international advanced level.