Shanghai Kotlin International Co., Ltd was incorporated into Hangzhou Yuzhong Gaohong Lighting Electrical Equipment Co., Ltd. that it is one of leading lighting manufacturers where the plant is located in Zhejiang province in an effort to rationalize and optimize the allocation of the resources. The advantage is that we have enough experience and knowledge in lighting industry specialized in CFL lamp series and LED series and we have the most competitve price and qualified products with around 20 years lighting manufacturing experience.