Wuxi Longtai Precision spring Materials ltd is a manufacturer and researcher of ultra-thin, ultra-narrow, ultra flat and super-hard precision stainless steel strip in China; it has modern and advanced production line, top ranking imported equipment, perfect craft, strong technical strength and professional sales team. Wuxi Longtai Precision Spring Materials main products: spring steel strips; piston ring steel strip; pen clip steel strip; clockwork strip and so on. We have machines of 20-roll Sendzimir mill, bright annealing furnace, stretch straightening machine, degreasing cleaning machine, precision polishing machine, high precision slitting machine, high-precision trimming and flat and side straightening machine. Size range: thickness from 0.05mm to 6.0mm, width from 1.3mm to 1250mm, hardness can reach HV590-610. Please contact wxlongtai at 163 dot com or debbiezfm at qq dot com