Spring balancer is mainly by the energy accumulation volute spring coil,the suspension loads in the air in the state,the elastic suspension”balance and gravitational potential energy,and it is spring balancer is the basic principle of work,therefore,is a spring balancer tool supporting the use of special and operation,and the auxiliary appliance indispensable.Far cane (ENDO) spring balancer is widely used in cars,buses,locomotive,shipping,household appliances,building,emeralds,oil fields,machine manufacture,whether in the assembly lines or various forms of workers who use manual inspection,tools and equipment of the occasions with crane can use spring balancer is greatly reduced,and homework personnel from the labor intensity,improve the production efficiency,and helps achieve production.