Xi 'an Siduo Photoelectric Instrument Co., Ltd., formerly known as Xi 'an Star Photoelectric Machinery Research Institute, was established in 1992. It is mainly engaged in the research of various optical plastic components, and committed to expanding the application of resin optical components in optical products. Due to the development of its business, the institute was renamed as a limited liability company in 2000. In addition to producing resin optical components, the business has expanded to the research and production of magnifiers, LED lens, LED lens cover, special telescope, gun sight, high diopter PC glasses, photoelectric instrument and optical plastic injection mould, etc. STOEMI is registered trademarks of our company. It holds 16 patents. The factory built by the company is located in the eastern suburb of Xi 'an, an ancient city in China. It is conveniently located and elegant environment. Customers from all over the world are welcome.