... , glass lens, Brass sock, etc.The decrease of light resource is about 3 for every 1,000 hours.High efficiency ... Manufacture Profile: As a newly high-tech enterprise, Ningbo Kechuang Imp & Exp Co., Ltd. is dedicated to LED photovoltaic and lighting application R & D ... sales, technical support and service. Our manufacture base--Longhua Optical Co., Ltd. was established in Shenzhen in 1996. We have set up ...