KUOYUH W.L. Enterprise Co., Ltd. was founded in 1991. It specializes in engineering, developing, producing, and selling the Thermal Circuit Breaker products, such as restorable switch, Fuse, over-current protector, and etc. After ten years of continuous research and development, at present, we own the advanced technology ability and management ability as a professional factory producing circuit breaker. Our branch factory-KUOCHENG Electronic (SZ) Co. Ltd. was founded in 2003 in ShenZhen, and it engages in developing AR Series circuit breaker which is not yet produced by any company in the market at the moment. KUOCHENG has successfully passed the International Quality Standardization, ISO9001:2000. If you interest in knowing more about our products, please feel free to contact us.