CASIO(卡西欧)
Casio America, Inc., Dover, N.J., is the U.S. subsidiary of Casio Computer Co., Ltd., Tokyo, Japan, one of the world’s leading manufacturers of consumer electronics and business equipment solutions, established in 1957.
SHARP(夏普)
Corporate data, board of directors, organization in Japan, business activities, R&D organization, Japanese and overseas affiliates, etc.
PENTAX(宾得)
Manufacturers of 35mm, APS, and medium-format cameras, lenses, and accessories.
京东方
京东方科技集团股份有限公司（京东方A：000725；京东方B：200725）创立于1993年4月，是一家显示产品与解决方案的供应商。生产笔记本电脑、平板电脑、数码相机、智能卡系统与机具、网络电脑、LED显示系统。
Ricoh(理光)
Ricoh Global portal site. You can find Ricoh's wide range of products , environmental activities, invester relations.
SIGMA(适马)
For photographers everywhere, Sigma is the total sum of the research, development, manufacturing and service of the world's leading line of lenses and cameras.
适马中国
日本适马株式会社创立于1961年，主要以生产35mm单镜头反光相机和镜头为主。在历年来，适马公司不断将传统生产技术提升改良，配合优质光学材料创研新光学技术，让产品转化为普及完善化；产品类别包含传统135SLR自动对焦相机、定焦/变焦专业镜等系列，镜头焦距从8mm－800mm均列齐备，开创拥有个人风格系列，让不同阶层摄影爱好者，均能享受摄影的乐趣，在质量和功能上均可以媲美其它原厂专业镜头，产品行销遍及全世界，成为独立镜头生产厂家的前列。
JVC
JVC is a leading developer and manufacturer of sophisticated audio and video products that use superior technologies to deliver high quality sound and images.