GB/T 20310 — 玻璃纤维无捻粗纱浸胶纱拉伸强度测定 GB/T 20310-2006 玻璃纤维无捻粗纱浸胶纱拉伸强度测定. CNAS-accredited laboratory test standard. Version reference only. No standard text. GB 1033.1 1462 13657 5169.16 5349 228.1 7690.3 GB 9274 1771 1452 5169.12 4618.2 Testing: info@leisa.com