Pvc fabric life span is 8-10years and alumium frame is about 20-30years. Exactly high quality tents. Widely used for parties... 1. Application: The big tent can be widely used as the weddings, parties, exhibition, conferences, festivals celebrations, cafe shop, restaurants, corporate events , or other events, etc…2. Specification for the big tents (BT series):For details, pls refer to below chart ...