East Spring where East Spring genuine wholesale East Spring World Hardware

Where there is genuine, where there is a price advantage, where there is the New World. Japan, East (TOHATSU) spring using chrome silicon steel silicon-chromium steel (LR, MR partially used), high stress, high-speed amplitude, heat resistance and other advantages. Japan, East (TOHATSU) spring life: Tohatsu springs are manufactured through strict process management and quality management, at normal temperature (40 ℃ or less) the life of one million times Dongguan World hardware specifically for East Spring, very heavy load, heavy load, medium load, light load, a very light load are sold. The life of each load spring preload spring: the spring preload is not used in the situation, resulting in the spring just touches impact and generate instant impact when beating release, causing the spring to bend folded, unable to achieve the original spring life. Proposal spring preload amount = (0.02) ~ (0.05) × spring free length