Precision Vacuum Division - Design, R&D, Production and Maintenance of Vacuum Pumps 3. Special Sealing Materials Division - R&D and Production of Precision Perfluoro O-ring Headquartered in Beijing, there are production bases in Gu'an, Wuxi and Wuhan, Hebei. The company is currently developing and growing, with strong processing capabilities and rich processing experience, independent research and development capabilities for high-end materials, precision measurement and analysis instruments, excellent scientific research teams, and a number of core technologies and independent intellectual property rights. Semiconductor and other industries provide more complete and high-quality services.