BWT Beijing LTD (BWT), a Chinese-American joint venture enterprise, a manufacturer which specially dedicates in packaging of pigtailed semiconductor lasers and detectors. BWT integrates research, development, manufacture and sale together. With many years experience in researching, development and production, BWT has strong ability to produce high stable semiconductor laser module of optical fiber output with various powers, wavelengths, and packages. Also BWT provides customizing products and OEM services.