Dontop is dedicated to provide high quality products, supported by complete service, to gain total consumer satisfaction. Quality, Value, and Performance are our mission. Over years we have been working closely with OEM partners worldwide, supplying good service and vast selection of optical and outdoor products.

Ningbo Hongbo Optical Instrument Co., Ltd is located in Ningbo, Zhejiang province of China.

Ergas Technology Co., Ltd is a well-respected locally owned business servicing China wide for over 6 years. We have earned a reputation for competitive pricing & excellent service.

Factory of Optical Elements is a stock company under the Institute of Optics & Electronics Chinese Academy of Sciences, located in the side of Muma Mountain, Southwest of Chengdu, adjacent to Chengdu Shuangliu International Airport. Over 8000 sq. Meters factory are located in high technology Industry Park, Airport Development Area. Our subsidiary, Sichuan Kelong optical instrument CO. Ltd, established in 1998, majoring in producing of spotting scope.

Factory of Optical Elements The Institute of Optics And Electronics Chinese Academy of Sciences was founded in 1981. And during 1999, the company completed the joint stock system transformation.

Beijing Huilong Electric Optics Center (Shanghai Rongying Industrial Co., Ltd. ) is concentrating on the research and development of electric and photic measurement, images analysis equipment and system integration. After years of development, we has become one of the most influential professional equipment suppliers in domestic precision measuring domain, and constructs a strong and perfect research and development and design platform, our product line covers image measuring instrument, microscope, magnifying glass, digital projectors, electronic gauges etc, and commit ourself to development and application of image measurement software and online measurement system. Rely on strong technical strength and years of experience, we not only provide overall solutions of visual inspection and image analysis, also can provide personalized services according to the customer demand. Beijing Huilong Electric Optics Center is welcomed and approved by customers because of the leading technology, complete function, wide application and reasonable price. At present, customers all over the country, and has been exported to America, South Korea, Turkey, Malaysia and so on, established a good relationship of cooperation partners with hardware, mould, clocks, textile, machinery, electronics, injection molding, rubber industry etc.

We are a leading supplier and exporter for optics, such as binocular, magnifier, telescopes, etc. Car accessories, laboratory glasswares and tools.

Pilot Optics established in 1999, is a prominent manufacturer and supplier of eyewear products in Wenzhou, China. It primarily manufactures high-quality reading glasses, optical frames and sunglasses.

Ningbo Ezfocus Co., Ltd. is specializing in the research, development and production of home kitchen, patio, garden, pet supplies and wide range of outdoor and sports. We are located in Ningbo, Zhejiang, China, with convenient transportation access to Ningbo port.

Shanghai Seejoy Optical Co., Ltd., is specialized in various optical products. We providing the high quality optical lenses, magnifier and also eyewear accessory which depending of customers' needs.

Top optical instrument Co., Ltd is mainly engaged in the production and marketing of optical instruments, such as magnifier glass, all kinds of lens, telescope, compass, plastic product and so on, Our company have the advanced ability of product development, production and export right, processing a powerful productive base and marketing net work, whose products are exported to the U. S. A, Japan, Europe union. South America, Southeast Asia and many other countries and regions, which were deeply loved by both domestic and overseas customers.