1、 Different shapes, structures and types of membranes are used, and the steel structure columns used are also different, so the quality of membrane structure buildings is also different.

2、 Different materials

1. The cost of PVC film building materials is relatively low. With polyester fiber as the base material, the film structure shed can be used for 7-15 years.

2. The structure cost of the coating film is slightly higher, twice that of the PVC film structure. The service life of the polyester fabric with titanium dioxide (TiO2) as the base material can reach more than 15 years.

3. The cost of PTFE membrane is very high, about 4 to 5 times that of PVC membrane structure. The substrate is made of glass fiber, and the coating indicates that Teflon is used.