Weifang Luyang foundation waterproof membrane is manufactured inside our 10,000 ㎡ factory with six advanced production lines, supplying modified‑bitumen and polymer‑reinforced below‑grade‑specialized sheets with multiple reinforcement grades. Every finished roll completes lab testing for hydrostatic‑pressure resistance, chemical‑soil‑tolerance, elongation and lap‑seam‑strength indicators. Our product holds ISO and CE certification and supports custom thickness specifications. We deliver sample assessment, below‑grade foundation construction guidance and global shipment for more than 50,000 worldwide construction‑industry cooperative clients.