упругость пружины

Extension Springs,whose diameter is from 1.0 mm to 8.0 mm, have been made from the material of manganese and steel wires, piano line steel wires, importing and domestic stainless steel wires. The products are well durable, thermal-resistant and have good extension stability. They are usually fitful for domestic electronic appliance (bread machines, electro-toast contains, microwave oven, etc ) implements ( grove implements, office implements, etc.), mechanic products , mechanic products, etc.