We are a professional manufacturer of mechanical locks (spring stopper adjuster) and gas stopper adjuster (patented gas spring). Our factory was founded at 1978 and has held the field for 40 years and stays competitive in the volatile environment. We have a powerful developing ability as well as mechanical techniques. Our customers spread over many countries including USA, JAPAN, THAILAND, AUSTRIALIA, CANADA, BRAZIL,UK, DEMARK, CZECH REPUBLIC, ITALY, SWEDEN, ARGENTINA, GERMANY, SOUTH KOREA,CHINA,SPAIN,TURKEY ,etc. More trust we gain from our customers, deeper feelings of companionship with them. We are ready to have an overture to begin the partnership between YOU and US. Welcome to contact us if you have any needs or questions. Visit our on Facebook and Twitter! Facebook: https://www.facebook.com/FogimSpringStopperAdjuster/ Twitter: https://twitter.com/FogimC