How to extend the expiration of selling online?

Extension is not supported. The expiration of the selling website does not support extension, and the validity period is printed on the back of the selling card, which can only be used within the validity period. Headquartered in Shenzhen and affiliated to Shenzhen Huayuxun Technology Co., Ltd., Zuozuo.com is a smart movie Internet platform integrating movie information, online ticket purchase, user interaction and socialization, and movie derivative sales.