we are the manufacture of HID Xenon Kits of China(h1,h3,h4,h7,9004,9005,9006,9007,d2s,d2r),and now we have produced the newest h4 flexible lamp which have been tested for 100000 times by turning on and then turning off continuously in 4 days ,and so if you have any interest ,pls kindly let me know.