Weifang Luyang bitumen self‑adhesive sheet membrane is manufactured inside our 10,000 ㎡ factory on six advanced production lines, supplying polymer‑modified bitumen grades with varied surface treatments. Every finished roll completes lab testing for adhesive strength, low‑temperature flexibility and self‑healing performance indicators. Our product holds ISO and CE certification and supports custom thickness specifications. We deliver sample assessment, cold‑laying operational guidance and global shipment for more than 50,000 worldwide construction‑industry cooperative clients.