... .transmittance:92% 4.strict quality control 2011 HOT high quality low price PMMA diffuser for LED light Matierals : Optial grade ... has over 40 numerical control machining equipments, including high-speed CNC machining centers, Precision electric discharging machines, ... -qualified professionals, and imported high-precision mechanical equipment, the high-precision and high- speed of mould is guaranteed, ...