Chuan Rong Industries Co., Ltd. was founded in 1961 Taipei, Taiwan. We develop and market AVRs. More than eight years ago, when we saw a need for power supplies in the market we jumped in. The company went into manufacturing all kinds of power supply system and enjoyed an excellent reputation for having the best UPS up to 20KVA. We have put almost all of our energy into developing our own designs and circuits to satisfy requirements of our customers.