Chinese rare earth polishing material manufacturers have successfully developed high-performance rare earth polishing powders and rare earth polishing liquids, and their products have reached or approached the international advanced level to meet the application requirements of polishing liquid crystals, silicon wafers, and high-end glass substrates.
The Chinese government provides financial and technical support to 7 rare earth polishing materials technology companies including BTXT Rare Earth Materials Research Institute and BTYH Polishing Materials Technology Corporation. BTYH has built a rare earth polishing powder production line with an annual output of 6000 tons. The particle size of rare earth polishing powder has reached nanometer level. Polishing liquid and polishing wafers have replaced the products of DuPont and Universal in one fell swoop to break the monopoly of foreign companies on the high-end polishing powder market. The sales area has expanded to the United States, Japan, South Korea, Egypt, Malaysia and other countries.
Rare earth polishing materials occupies a high proportion of the amount of rare earth used in industrially developed countries, and have been widely used in the polishing of optical glass, liquid crystal glass substrates and touch screen glass cover plates.
Polishing refers to the use of mechanical, chemical or electrochemical methods to reduce the surface roughness of the workpiece to obtain a bright and smooth surface. Chemical and mechanical polishing is currently recognized as an ideal technology to solve the problem of surface planarization.