Ottica al quarzo  Fabbricanti, Commercianti, Fornitori

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.

We take precision seriously
Optik+ is your expert and experienced partner in optical precision machining. Since 1926, we have been working with the utmost precision on materials like glass and ceramics to gain the trust of our customers.
Our extensive know-how is always based on the latest developments, and this ensures that we can offer our clients the highest possible level of reliability. As a traditional family company – the fourth generation is already well-established within the company – we place great importance on a number of rather rare values: loyalty; courtesy and respect, also towards our employees, a sense of responsibility and sustainable entrepreneurship.
Driven by the spirit of the past, we focus on today and also what the future holds in store - with our accredited products and services, we successfully occupy a niche in this specialised branch. However, that doesn’t mean to say that we don’t trust ourselves to come out into the open. We are happy to convince you by providing the perfect solutions for your optical products.

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.

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.