Shanghai AD Equipment Supplier Association of China (abbr.:SADSA) consists of the enterprises which engaging in advertising materials' R&D and AD equipment manufactory. The association is a non-profit and professional social group possessing legal representative qualification trans-sector and trans-ownership.

The association observes the laws and regulations of the People's Republic of China . SADSA will establish the standard regulation of AD equipment materials' R&D and AD equipment manufacture instructed by the relevant governing department, implement the self-discipline and cooperation, protect the legal benefits of the members, link the government relationship, lead the international exchanges, and help the members to develop the domestic and international market, promote the technical advance and economical development in the AD equipment manufacture area.

The main responsibilities of SADSA constitute cooperation in the sector, offering information, consultation, training, evaluation and assistance to expand international market shares for members. SADSA possesses its own official website---- Shanghai AD Equipment Supplier Association Web ( www.sadsa.cn ) and B2B website ---- China AD Equipment Trade Web ( www.east-sign.com ). Furthermore ， SADSA will operate the magazine named Advertising& Sign and provide comprehensive and professional services for members.