high brightness, good in toughness, deep thermal image; neat end surface, good in tightness, convenient and practical 1)Specification: Available size;37mmx50mm, 37mmx70mm, 44mmx50mm, 44x70mm, 44x76mm, 57mmx50mm, 57mmx57mm, 76mmx70mm, 76mmx76mm, 80mmx70mm, 80mmx80mm,etc. Any other specifications could been requested by clients.2)Core pipe: cardboard core or plastic core. The core with the inner ...