WaferChina (西安唐晶量子科技, also known as Xi’an Tangjing Quantum Technology) is a company engaged in the research, development, production, and sales of semiconductor wafers. It offers gallium arsenide-based vertical-cavity surface-emitting laser and high-power semiconductor laser epitaxial wafers. The company serves optical communications, light detection and ranging, 3D sensing, industrial welding, marking, medical treatment, and distance measurement markets.