青云翻译

2, through the mask using pmma material, good transparency, high optical efficiency, non-friable;

2, translucent enclosure is PMMA material, light transmission is good, high light efficiency, it is difficult to break;

2, and mask using PMMA material, good light transmission, a high efficiency, non-friable;

2, translucent enclosure is PMMA material, light transmission is good, high light efficiency, it is difficult to break;