... light base 4)4w,6w,8w for choosing High Brightness LED Bulb 4w Feature 1.The shell is 6063 extrusion molding ... function of over-voltage protection, over-current protection and short circuit protection etc, safe and reliable. 3. The cover is ... 2008 factory established in 2006, Our main products including: led strip, led tube(UL# E344776) , led panel,led flood light,led bulb, spotlight, par light etc.