Quartz Optics  Manufacturers, Traders, Suppliers

Founded in 1998, Beijing Zhong Cheng Quartz Glass Co., ltd. (ZCQ) focuses on quartz glassware process and production. With customer first value and attention to detail, we strive to offer quartz products combining long years of production experience and state-of-the-art technology.
We try to fulfill customers requirements from every single step: confidential contract, production, inspection, packaging, payment, after sale services. Whatever customers require, we try to reach and help you realize.
With continuous efforts and dedication to innovation, quality control and customer services we at ZCQ meet even go beyond customers' expectations through supplying competitive pricing in mass production.

After more than 30 years' rapid growth since the foundation in 1990, CASTECH INC. has become a recognized leading supplier of crystals, optics and laser components in the world. In 2008 CASTECH successfully completed IPO in Shenzhen stock exchange. (Stock Code 002222) Today, at our 450,000 sq ft advanced facility, over 1000 employees are dedicating to satisfy customer needs in terms of performance and cost effectiveness.
Crystals for Laser and Telecom Application:
With more than thirty years' untiring effort, CASTECH has developed flux, Czochralski, water solution and Bridgman-Stockbarger crystal growing technology, now is a worldwide leading supplier with largest mass production lines in the world for LBO, BBO, Nd:YVO4 and KTP. In addition, we also provide CLBO, BiBO, KDP, KD*P, Yb:CALGO, Yb:KGW, Ti: Sapphire, TGG, TSAG, α-BBO and other crystals for laser and telecom industries.

Zhejiang Crystal Optoelectronic Technology Co., Ltd. (COT) was founded on August 2, 2002 and listed on the Shenzhen Stock Exchange on September 19, 2008 (stock code 002273). In 2022, total revenue reached 43.76 billion yuan, with year-on-year growth of 14.86%, and the net profit climbed up to 5.95 billion yuan.
Over the past twenty years, COT has been a global optical expert in the field of information transaction, providing one-stop professional services from core components up to modules and solutions. At present, the company is involved in R&D and manufacturing process in five major industrial sectors, and its products include Optic Components, Thin-film Optics, Semiconductor Optics, Automotive Electronics & AR+, Reflective Materials, etc. The company has more than ten wholly-owned and controlling subsidiaries, and participates in multiple enterprises such as Japan Guangchi Co., Ltd., Ningbo Jishi Investment, Wuhan Wuyi Yuntong, Jingbang Optics, and Zhaoge Digital.
Our products span from Consumer Electronics, to Automotive Electronics and Metaverse. For Consumer Electronics, products such as Infra-Red Cut Filter (IRCF), Camera Cover Glass (CG), Narrow Band Pass Filter (NBPF) help COT to rank among the world's top producers and sellers. Our core competitiveness lies in its leading global technology integration ability to combine "Thin Film Design, Micro Nano Optic Techonology, Optic Cold Forming, and large-scale Automation" together. For Automotive Electronics, Head Up Display (HUD), Car Cams, and LiDAR window glasses have all been applied to the products and services of globally renowned vehicle manufacturers. For Metaverse, AI and display technology have developed rapidly in past few years, and COT has laid out a full technology path in the AR field to help incubate technology giants in mass production. In addition, the reflective materials produced by Zhejiang Yeshili, a wholly-owned subsidiary of Crystal Optech, have maintained a leading technological position in China for many years.
Looking into the future, with diversified application of Optics across different fields, the global optical industry has ushered in a golden opportunity. Crystal Optech will adhere to the guiding principle of "globalization, technology-oriented, and open cooperation", uphold the business philosophy of "be noble in life, be excellent in work", shoulder the mission of "innovation makes optics stronger, optics makes the world a better", and strive to "become an outstanding one-stop optical expert in the world"!

MANKUN electronics co., ltd. was founded in August 2005, is a collection of LED lighting PCB circuit board research and development, production, and sales in one of the highly Modern enterprises with new technology. Has a number of imported automatic production lines, a strict management system, and excellent technology research and development and management talent, and in February 2008 established Taiwan Mankun electronics co., LTD.
Professional PCB PCB is engaged in the production of the single and double aluminum substrate, copper substrate, FR4 fiberboard, multilayer PCB, and flflexible PCB. A complete set of imported advanced circuit board production equipment and electronic mounting equipment. The products are mainly used in LED lighting (LED commercial lighting, LED indoor and outdoor lighting, LED industrial lighting, LED vehicle lighting) electronics, machinery, communications, medical and other areas with high heat dissipation requirements; The company has passed UL certifification (certifificate number: E334090) excellent quality circuit board manufacturers.
Our company is the honoree of the " the quality first, keep improving" policy, with strong research and development capacity, and a number of patents to lay a solid foundation. Our products are widely exported to America, Russia, South Korea, other countries, and so on. Our company adheres to the Customer-oriented, with the best quality, best efficiency, and best service, to create the highest value for customers at home and abroad.