Tianjin Huanxin Technology & Development (天津环鑫科技发展) is a company that specializes in power semiconductor product design, development, and sales. It offers vertical double-diffused metal-oxide semiconductors (VDMOSs), trenchMOSs, insulated-gate bipolar transistors (IGBTs), Schottky barrier diodes (SBDs), and related power separation devices.