Changzhou Benefit Waterproof Equipment Co.,Ltd is a research ,design ,sales and service as one of professional waterproof high-tech enterprises, Our main products :SBS/APP Modified bitumen membrane product line ;Coloured asphalt shingle product line ;Self adhesive waterproof bitumen membrane product line ;Macromolecule self adhesive waterproof bitumen membrane product line ;Non-bitumen macromolecule self adhesive waterproof membrane product line ; Polypropelene waterproof membrane product line ;HDPE/PVC/EVA/TPO waterproof membrane product line ;Waterproof Painting product line ;Series of construction tools.ect.