Tianjin Zhonghuan Semiconductor Joint-stock Co., Ltd. is the most powerful manufacturer of discrete semiconductor devices in mainland and almost takes the same place with the champion in the world.

The main products of our company are High Voltage Diode, MWO High Voltage Diode, High Voltage Diode for Car Ignition and Bridge Rectifier. These products are widely used in Flyback Transformer, CTV, Monitor, Micro-wave Oven, Air Cleaner, Air Conditioner, Washing Machine, Programme Control Exchanger, all kinds of adaptors and other electric equipments.

The products' quality has reached international advanced level, and economic benefit ranks highly in the same industry in China. In 1994, the company passed ISO9002: 1994 product system approval. In 2003, the company passed ISO9001: 2000 quality system approval.

Our products are sold to 22 countries & regions mainly including Asia, Europe and America. We supply them with our products in large quantities. Our powerful clients in domestic include: Konka, Shekor, Jewel, Shenzhen Baili. Our powerful clients in the world market include: Samsung, Lienchang, Seawise, Sampo, Thomas, Philips, Pulse(Eldor), Termal, Selora. They are satisfied with the products not only on the quality but also on our service.

The annual production capacity of our company is over 1 billion pcs, with more than 200 million RMB Yuan annual turn over. The High Voltage Diode production and sales amount has ranked the first largest place in the world, with 43% market share abroad and 50% in domestic. The share rates of Rectifier Diode & Bridge Rectifier in China's CTV market are over 20% and 50% respectively.