With excellent quality, good reputation and service attitude, we wholeheartedly provide quality products and perfect after-sales service for all kinds of users. We warmly welcome people from all walks of life at home and abroad to establish long-term, extensive and close cooperative relations with us. Problems to be solved: for Dacro coated fasteners, the appropriate surface coating process should be selected according to the size, shape, quality of the parts, the difference between forging and casting, and the processing amount: 1. The proportion of Dacro coated film in different fastener products; 2. 2. Dacro has set up an enterprise R & D center with a building area of 10,000 square meters. The main products include 13 casting and forging varieties such as seeder, trailer, rotary tiller, steel rolling spare parts, etc. More than 20 engineering and technical personnel engaged in design, plate making and other work. The company has more than 20 computer design and plate making work face, each year independent research and development of more than 2000 new face, the formation of the new face design, plate making, printing and product sales of one-stop service, won the domestic and foreign counterparts and ceramic enterprises wide attention. Has been to "quality, reputation first" for the purpose, the company has been rated as hebei province bureau of quality and technical supervision quality stable unit, for three consecutive years been rated products supervision and inspection of qualified units, by hebei packing association as the provincial advanced unit "packaging", by handan city science and technology progress prize rated as "advanced enterprise", "advanced enterprise of manufacturing informatization by handan city science and technology progress prize. Over the years, product quality by domestic and foreign manufacturers green precision casting lai. In this paper, the method of 3 D color mixing is studied. Secondly, the choice and application of paper and ceramic three-dimensional pigments are discussed.