Self-lock gas spring shape qauv zoo ib yam li compression gas caij nplooj ntoos hlav, thaum tsis muaj lub xauv, tsuas yog qhov pib taw tes thiab qhov kawg taw tes, nws yog qhov sib txawv loj tshaj plaws ntawm hom thiab compression gas caij nplooj ntoos hlav, thaum lub sij hawm mus rau qhov kawg, tuaj yeem kaw lub...
Nyeem ntxiv