1. good quality with promotion price. 2. excellent and strict QC. 3. oem lamp is ok. 4. CE, RoHS, EUP, SAA, SASO ... B22 , E26...5, OEM energy saving lamp is available. Mosquito Repelling Energy Saving Lamp 2,000,000PCS/M CE, RoHS, ... swith;2) Can't used for the hermetic sealing lamp;3) Nor proper setup at higher than 50*c ... tube while installing. 2U Mosquito Repelling and good quality energy saving lamp