Red line laser alignment adopts excellent quality import 650nm red laser diode. It totally has no limitation of targeting distance, angle or others, but just providing a kind of noncontact red reference line on required working surfaces precisely and accurately. It uses glass coated optic lens to instead traditional plastic optic lens in order to make projecting red reference line more clearly and accurately on required working surface. As a result, this industrial developed alignment laser owns longer serving lifetime than common lasers. Its serving lifetime can extend at least 3000 hours than common ones. In addition, its stability can also improve at least 40 percent in total. Whatever kind of operating occasions, this industrial alignment laser has just made the most perfect line projection on all targeting surfaces precisely and efficiently.