Birchtek Polytron Technologies Inc (158 factory) membership China Aviation Industry Corp, is the largest professional engaged in R & D and production of high reliable optical, electrical and fluid connectors, while providing high-tech enterprises of optical and electrical connection technology, fluid system solutions. The company, listed on the Shenzhen stock exchange in November 1, 2007, is China's first overall military enterprise. The company is committed to light, electricity, fluid connection technology research and product development, has connection technology research institute. In 2010, the "state recognized enterprise technology center" was awarded". Independent research and development of all kinds of connectors, more than and 300 series, more than 250 thousand varieties, the main products include circular, rectangular, fiber, filtering, lightning protection, anti nuclear electromagnetic pulse, RF coaxial connector, the fluid, while providing optical module, optical transceiver, optical fiber network, high-speed transmission, cable assembly, system integration of optical and electrical, fluid connection technical solutions. With its specialization and high reliability, products have won the National Invention Award, the National Science Conference award, the national key new product award, the aviation science and Technology Progress Award and other awards. In aviation, aerospace, weapons, ships, telecommunications, railways, electricity, electronics, rail transportation, new energy, coal safety and other military and civilian fields are widely used, and with domestic and foreign well-known high-tech enterprises to establish a good strategic partnership and win-win model. Products exported to the United States, Europe, Australia, Korea and other more than 30 countries and regions, in the Chinese market as "electronic component leader" and enter the global supply chain of military enterprises.