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GRT(Beijing Guangruntong Technology Development Co., Ltd.) is headquartered in Beijing Zhongguancun Hi-Tech Park and began in April 2008. GRT has gathered a group of senior R&D personnel with an average age of more than 15 years. Under the background of the rapid development of the optical fiber industry and the optical fiber to households, GRT has always adhered to the strategic principles of quality and innovation, and has gradually grown into a high-tech fiber optic company that is currently well-known in China, which integrates R&D, production and marketing, and has its own intellectual property and its own brand.
The main products of GRT are Optical Fiber Network Cards, Optical Fiber Modules, WDM devices, Optical Converter, Optical Fiber Patch Cord, and Optical Splitter. All kinds of products have passed international certification such as FCC, CE, and ROHS, as well as national industry certification, and have won a number of scientific and technological progress awards and excellent product awards. On the road ahead, GRT is committed to building China's own national enterprises, achieving the goals of "Optics Links The World, Connects Us Togetcher".

AVIC JONHON OPTRONIC TECHNOLOGY CO., LTD. held by Aviation Industry Group of China, is the largest provider of interconnection solutions in military defense & high-end manufacture fields in China. JONHON is based in Luoyang and sets up sub-companies and subsidiaries in Xi’an, Shenzhen, Shenyang, Dongguan, Qingdao. In 2007, JONHON was listed in Shenzhen Stock and the stock code is 002179.
Having National R&D Center, Postdoctoral Research Center, and Test Center, JONHON specialized in R&D of optical, electrical, fluid technology and equipments, developing over 300 series and 250000 kinds of connectors. By the end of 2015, JONHON has obtained over 2000 patents, drafted and established over 200 occupation standards, gained the certifications including AS9100, ISO9001(2000), TS16949, ISO14001, OHSAS18001 and many key products past UL, CUL, CE, TUV, CB, etc.
Products are widely used in aviation, aerospace and military field, communication and data center field, railway transportation field, new energy vehicle field, power equipments, petroleum equipments, medical equipments, and other civil high-end manufacturing field, which are exported to more than 30 countries and regions including European countries, the United States, Israel, Australia, Korea, India and etc.
Practicing the purpose of “Contribute to Nation with Aviation Industry, Strengthen the Military Forces and Enrich the People” and implementing the corporate core culture of “honesty and virtue”, JONHON efforts to be the global leading provider of interconnection solutions.

SolarWorld AG has developed in just a few years from a trading company to a solar concern with integrated solar value chain process - from raw materials to the solar wafer, the solar cell, the solar module right up to ready, high-quality solar power plants.
Today, the company profits from the fact that it was early to set up the entire solar value chain: It has modern factories at all production levels to serve the solar market comprehensively. In addition, the company controls the development of solar power technology at all levels under its own roof.
The company employs more than 2,700 staff members in its locations in Germany, Spain, South Africa, Asia and USA - and this number is growing.