Introduction of Shenzhen Hill Group Shenzhen Hill Optical Technology Co.,Ltd(Hill group) was established in 2006, which was a new, "green" and high-tech enterprise, specializing in manufacturing LED series products with one set of research, development, production, distribution and after-sale service. Shenzhen Hill Group owns three companies: Shenzhen Hill Optical Technology Co., Ltd, Shenzhen Hill Precision Optoelectronics Photoelectric Technology Co., Ltd and Shenzhen Brilliant Lighting ...