Shows profile of the lamp holder is PP material, light temperature rise, resulting in lamp holder deformation or plastic flow, resulting in profile lamp failure. Also shows profile lamp maintenance inconvenience (need to remove the trim), so the replacement lamp holder convenient by our repair factory and drivers of all ages. The original profile lamp has two qualified suppliers, parents of a lamp holder, a short holder. Mainly long lamp holder appear this kind of problem is more, please demand friend subscribe before consulting the Department, thank you!!