Weifang Luyang waterproof membrane sheet is manufactured inside our 10,000 ㎡ factory with six advanced production lines, supplying modified‑bitumen, polymer and composite roll‑sheet series in multiple thickness grades. Every finished roll completes lab testing for tensile‑elongation, hydrostatic‑resistance, lap‑seam stability and anti‑aging indicators. Our product holds ISO and CE certification and supports custom‑roll‑dimension specifications. We deliver sample assessment, on‑site laying guidance and global shipment for more than 50,000 worldwide construction‑industry cooperative clients.