... painting on the surface ,to resist acid and alkali and prevent aging4. Minimal maintenance cost and pure,saturated colours, no fickering, no UV, ... design6.Ceiling lamp, easy to install7. Color: warm white,pure white,cool white8. Electronic safety standard : class 1 INTRODUCTION: ... , such as red, green, blue, yellow, white and warm white and so on. Widely used for commercial building, meeting room ...