Changzhou Sudiyang International Trade Co., Ltd. has offered one-stop service for all kinds of chair parts (Gas springs, mechanisms, bases, wheels) and study desks for 17 years.Our company is dedicated to manufacture and develop our products with advance equipment and skilled engineers. With SGS BIFMA5.11 and DIN4550 TUV certification and good price and considerate service, we earn a high reputation by our customers from more than 20 countries.