The official name of Acrylic Swimming Pool is Fiberglass Reinforced Plastic Swimming Pool (Acrylic is a play on ACRYLIC).
Its surface material is methyl propyl ester, on the opposite side of the glass fiber, coated with special resin enhancement.
The whole pool should be uniform color, smooth surface, no stratification, bubbles, etc.
The surface layer thickness is generally above 3 mm, and the combination with glass fiber is firm, without stripping.
Acrylic pool heat transfer is slow, so the heat preservation is good, contact the body surface without "cold" feeling.
Compared to cast iron or steel, the pool has a "warm, soft" feel that does not hurt the body.