Answer:
First, the biggest difference between a hot spring pool and a swimming pool is that they must be able to withstand both acid and alkali—
(1) The area of general hot spring pools is relatively small; they generally use FRP construction methods. However, since FRP construction has the disadvantages mentioned in question 57 above, the construction workers must work in an oxygen-rich environment, and they must be able to wear anti-toxic masks to ensure safety and health. (Therefore, regarding safety and health issues, it is recommended not to use FRP.)
(2) Keaton Series T1.
(3) Large-area hot spring pools are not suitable for manual tar-based PU construction; it is best to use ultra-fast curing polyurethane or FRP construction.
2. High-speed curing polyurethane and high-speed curing PU spray coating techniques—This technique offers the highest unit price and the best results, but there are often short-sighted and opportunistic manufacturers in the market who use inferior materials to cut costs and compete unfairly, which greatly reduces the effectiveness. Therefore, the reputation of materials brands and construction companies is very important and should not be taken lightly.