... , no mercury, no UV, no IR;3, PWM constant current technology, high efficiency, low heat, high precision constant current, DC working, no strobe ... answer all your inquires in fluent English.3. OEM/OEM, Customized service available.4. High quality with competitive price. Contact me : Thanks ... via Trade Manager. Thanks and best regards,Lily Huang gx53 led/ high power led modern ceiling lamp