1,This kind of gas spring is our best seller 2,High quality 3,reasonable ... we will provide best service to you.2,compression spring suitable for cabinet and chair,newton 30N,50N,80N,100N,400N,if you ... oil; Our paint is passed ROHS test; 4,When the gas spring is up and down, it's soomth opration without noise ... days after deposit.Shipment: We can accept your appionted forwarder. gas spring for device