First choose the appropriate material according to the OEM color, and then determine the best ratio according to the characteristics of the material, make the sample, comprehensive examination test, match test and adaptability test, large-scale precision casting test after the production amplification test. In the production of high quality products, material selection, formula design and processing technology are the most critical. The company's predecessor is the consumption department of state-run hanguang machinery factory. It began to produce toner in 1982, and has more than 30 years of history in research, development, production and sales of toner for copiers and printers. At present, there are 4 production lines, and the annual production capacity can reach more than 3,000 tons. Research and development, production and other technical level, production capacity, product quality, market share, reputation in the domestic peer steel foundry are among the best, and the industry well-known experts do technology and management, since 2007 the production and sales of the country. To implement the "quality strategy", research and develop high quality products to meet the needs of domestic and foreign customers, with nearly 30 years of professional research and development history of copiers, provide strong technical support and after-sales protection for value-added services of products; In 2007, it passed the ISO9001 quality system certification and ISO10004 environmental system certification, and in 2009, it obtained the high-tech enterprise certificate. "Keep improving, keep improving" is the management policy and aim of our company. Due to the outstanding management, the company has been rapid development. This product belongs to the chemical pastel color project, its processing technology is completely different from the physical method, is a new topic, facing the great challenge of the foundry company. First, the resin is synthesized by chemical method, and then other additives must be added. Through process control, each grain grows into regular shape to meet the appropriate particle size distribution and charge requirements. Use external addition to make it meet the requirements of use.