光電元件  製造商、經銷商、供應商

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.

Simberson is a factory which located in Donguan city Guandong province in China.
We had our own workshop and experienced workers..
Our main products are pv cable &wire for solar panel system /MC4 Connectors/Hook up wire /Terminal connectors which are saled in world wide market.
The biggest customer of us is Jiang xin Jinko Wire &C able co.,LTD which is Top 1 in china.
All our items are saled in Alibaba App.
All our products are got UL/TUL certificate.
Parkcage and price can be negotiable ,

WHO WE ARE?
Shanghai Longjoin Electrical and Mechanical Technology Co., Ltd. in September 2003 incorporated in Shanghai Baoshan District, specializes in light-controlled switching device design and development and manufacturing. February 14, 2016 implementation of the share reform and changed its name to Shanghai Long-Join Intelligent Technology Inc., May 30, 2016 in the NEEQ(National Equities Exchange and Quotations) listing, stock code 837588.
INVESTMENT
The company has a registered capital of 28 million yuan and a total investment of 150 million yuan (including fixed assets of about 100 million yuan). The headquarter is located in Shanghai. The factory is located in Haiyan, Zhejiang Province. The factory area is about 38,000 square meters.
STAFF
The company's existing staff of about 200 people, including three senior engineers, 12 engineers.
SALES
the current products are almost all exports (including self-export, export agents and lamps supporting re-export), the current annual sales of about 8.5 million.
PRODUCTS
The company's main products for the light-controlled light switches, is a type of environment to track the level of brightness to automatically control the state of controlled lighting switch of industrial or civilian control devices. Company's product development to its own intellectual property rights (authorized by the four national invention patents, nearly 30 utility model patents) as the basis, with reference to international standards, compared with similar foreign products have cost-effective advantage. At present a full range of products have been the United States UL, CE safety certification, RoHS environmental certification and stability of the export market in North America, intelligent product line continued to launch and the first product to complete certification. The company's current business level living in the forefront of the global industry.
MARKET CONDITIONS
the company's products take into account the industrial and civilian, the application of larger, so the market prospects. The basic products based on the United States popular installation (in accordance with ANSI C136.4, ANSI C136.10, ANSI C136.41 and other standards) design, the current North American market, the product has been stable supply of the United States well-known lighting manufacturers, while the United States Optical manufacturers mainstream OEM manufacturers, and indirect supply of major distribution channels; the company also actively explore Mexico, Brazil and other Central and South American market similar to the US standard. The main products bimetallic light control switch has occupied more than half of the US market share, the current program-controlled electronic intelligent light control switch has also been successfully developed and gradually put on the market, access to new and old customers unanimously approved, is expected to cultivate a new main business.
QUALIFICATION
The company's current full range of products have been the United States, Canada UL and CUL certification, CE, CQC certification, access to dozens of patents. Leading products are in line with environmental requirements. The enterprise passed the ISO9001 quality management system certification.

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"!