Industry

Length specifications：Standard lengths include 6mm, 8mm, 8.5mm, 9.5mm, 11mm, 12mm, 12.5mm, 13mm, 14.5mm, 15.5mm, 16mm, 18mm, and 20mm. Additionally, the market also offers extended lengths such as 22mm, 25mm, 30mm, 40mm, 50mm, and 60mm.