... manufacturer and is able to supply all kinds of springs, including Compression spring, Extension spring, Torsion spring, Wire spring, Art and Craft ... to visit us. 1> More than eleven years in producing springs.2> Accept custom orders, design according to customer’s ... 000 times—5,000,000 times 2.high strength of extension and hardness3.excellent elasticity4. acid and alkali-resistant and high ...