Guangzhou Liang DI CO.,LTD, specialized in developing & manufacturing HID series products! Our HID coversion kits for car headlamp, H4 Hi/Lo bulb, Search Light , Torch light, etc, with advanced technology, production technics and high quality materials, our products had gained DOT(USA), EMARK(Europe) approval and 35 worldwide & Chinese patents .The international quality control system of ISO9001:2000 and ISO/TS16949 have been approved by TUV in our company and the perfect ERP systems have been established in our company too! Our factory have 144000 square feet, 7 professional workshops, 16 production line and 600 employees, monthly capacity of HID products has been over 90000 PCs! We always take the technology and customer as the uppermost, we always work hard to great values for our customer and offer our customer better products & service!