Manual glass elevator is widely used on old cars, to introduce below small make up for all manual glass levelers do handle the torque and the drop test unqualified on its use:

1, handle the torque test can see on the door handle the feel is light or heavy degree when the levelers, unqualified is generally larger, shaking levelers feel heavy.

2, drop: only manual glass elevator rises will have, in general as long as the product design is reasonable, the drop will be no more than 3 mm, if not qualified, may affect the glass up to the top dead center, automatic drop too much, the car door glass is caged, this situation is rare.

And that's the brief introduction. If you have a manual glass with advanced aspects of demand, welcome to contact with the company, our enthusiasm, hereby sincere friends from all walks of life, the car factory leadership presence and cooperation!