In recent years, the application of pre laid (HDPE) waterproof coiled material in underground engineering waterproof is increasing day by day. Its unique product advantages are favored by customers and users. The pre paved polymer self-adhesive membrane waterproof coiled material is composed of main material, self-adhesive, surface anti (anti adhesion) protective layer (except the lap area of coiled material) and isolation material (when necessary), which is bonded with post cast concrete to prevent water channeling on the bonding surface.