This is a 12 months membership
Corporate membership is open to any company with an overseas registration, whether or not they have operations in China. The category of membership is determined by the global revenues of the company.
Membership Refund Policy
No refund of membership dues shall be made, whether in whole or in part, to a resigning member. - See more at: http://www.amchamchina.org/about/constitution-of-the-american-chamber-of-commerce-in-the-peoples-republic-of-china#sthash.mtcy3f81.dpuf