Founded in April 2016, Shanghai Ruitai Photoelectronic Technology Co., Ltd. (Raytekoptics)is located in Jiading industrial base, Shanghai National Technology Transfer Center, Chinese Academy of Sciences, adjacent to the Institute of Optics and mechanics, Chinese Academy of Sciences. At present, the company has nearly 50 employees, mainly producing and selling all kinds of optical components, including all kinds of optical lenses, optics mirrors, optics windows or diffusers, optical filters, polarization optical components, spectrometers, optical prisms, optical diffraction gratings, infrared optical components, fiber assemblies, laser optical components, coated optical components, ultrafast optical components, transfinite optical mirrors, etc. As a wholly-owned subsidiary of Shanghai Jingzhi (formerly Shanghai silicon sword) new materials Co., Ltd. And Shanghai C-laser, Shanghai Ruitai Photoelectric has a professional production base of 10000 square meters and various processing equipment, including large water jet, horizontal band saw, CNC machining center, multi-function milling machine, CNC fine carving machine, CNC plane precision milling machine, CNC lathe, water mill, internal circular slicer and polishing machine, polishing machine, Focused ion beam(FIB), Magnetorheological Polishing (MRF), CNC six axis small grinding machines, interferometers and other sophisticated equipment dozens. On this basis, Shanghai Ruitai Photoelectric can provide customers with accurate, complete, high quality optical parts customized processing services. Our products sell well in Europe, the United States, Russia, Japan, South Korea, Germany, Spain, Italy, France, Saudi Arabia, Canada, Australia, New Zealand, Norway, Argentina, South Africa and other countries and regions, and are deeply recognized and appreciated by users at home and abroad. In addition, Raytek Optics widely supply all types of optical parts made of Corning, Schott, Hellma, Nikon, Ohara, AGC, Vitron and other materials, including quartz glass, glass ceramics, optical glass and coating materials. The main domestic optical mechanical (Electrical) institutes, research institutes and astronomical institutes at all levels have established extensive and profound business relations with us.

Established in 2019, Shijiazhuang Yongxin Mining Co., Ltd. is a modern chemical enterprise that integrates research and development, production, and sales.

Headquartered in Tianjin, China, SHARK has committed to providing cutting-edge technology and

Our company offers variety of bentonite products which can meet your multifarious demands. We adhere to the management principles of "quality first, customer first and credit-based" since the establishment of the company and always do our best to satisfy potential needs of our customers. Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation since the trend of economic globalization has developed with anirresistible force.

Yuzhou SpringDay Industry Co., Ltd as one branch of YZSD Refractory Group, which set up in Oct. 2008, located in Yuzhou city, Henan province, China. We are focus on refractory, metallurgical, abrasive and insulation materials in these years. Depending on the advantages of rich mineral resource around us, lower running cost in a small city and hard working of our staffs, we are growing up and doing our best to serve for steel plants, aluminium industry, glass factoies, metal indsutry etc. In the future we will continue contribute to refractory, metallurigcal high temperature materials and insulation materials. In order to hlep more customers to use high efficiency materials at lower cost and protect our earth home, we are keeping fight and moving on.

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