1.Easy and safe to open the lid. Using the special mechanical structure to avoid accident.
2.Auto-hold at the various position and prevents the tiny rubbish to drop down.
3.Easy specification of the balancer can apply to the different lids.
4.Easy to adjust the torque with the visuality function, constant power can be worked with in the usage.
5.Easy to assemble. The design of integrative structure and the special spring make it completely free maintenance.
6.Opening the lids aslant can be allowed, the maximum oblique angle of W10-W50 is 40 and the maximum obligue angle of W70-W350 is 30, it depends on the torque calculation under the different oblique angle.