located in Tonglu, Hangzhou, which is known as the "Hometown of Endoscopes in China". Tonglu is the largest industrial cluster area for rigid endoscopes and their supporting diagnosis and treatment instruments in China, and is renowned as the "China Medical Endoscope Industry Base". We are an enterprise specializing in the design, production, and sales of optical instruments. The company has a group of technicians and operators with rich work experience, and is equipped with advanced production equipment and precise testing equipment. The company's main products include biological microscope series, metallographic microscope series, biological microscope objective lens series, metallographic microscope objective lens series, large field of view eyepieces, CCD adapter lenses, endoscopes, rod lenses, as well as various plane and spherical lenses, optical lenses with other special requirements, and surgical medical devices, etc.