1. Identify the material:
Steel bathtub: Because its surface is enamel, it is not easy to hang dirty, bai is easy to clean, not easy to fade, and has a long-lasting luster. However, because the steel plate is extremely thin and its thermal insulation performance is not good, some add thermal insulation layer. The enamel surface is not resistant to impact and has poor thermal insulation.
Cast iron bathtub: easy to maintain and not easy to produce noise during use. Due to the thick cylinder wall, good heat preservation performance, high gloss, good acid and alkali resistance. Moreover, the cast iron cylinder has good gloss, the service life is the longest among several cylinders, and the price is the most expensive.
Acrylic bathtub: changeable shape, light weight and good heat preservation effect. The disadvantage is that man-made organic materials have the disadvantages of poor high temperature resistance, non-abrasion resistance, and easy surface aging, and are relatively easy to change color. The surface is prone to scratches due to its low hardness.
Pearlescent bathtub: smooth surface, pearl-like luster, sturdy and durable, good heat preservation, light weight and easy to install.

2. Calculate area:
Bathtubs of the same size have different depth, width, length and contours. If you like the depth of the water, the location of the overflow outlet should be higher. If it is too low, once the water level exceeds this height, the water will flow out from the overflow outlet. The water depth of the bathtub is difficult to reach the required depth; there are elderly or disabled in the house For people, it is best to choose a lower side position, and you can also install handrails in appropriate positions.
If you want to buy a skirt with a single-sided skirt, pay attention to the direction of the skirt. According to the location of the drain and the wall, determine whether to choose the left skirt or the right skirt. If you buy it wrong, you cannot install it.

3. Fixed function: If the budget is loose, you can consider a jacuzzi. The jacuzzi can massage muscles, relieve pain and activate joints. There are three types of massage bathtubs: whirlpool type, which makes the bathing water rotate; bubble type, which pumps air into the water; combined type, which combines the above two characteristics. But be careful to choose the model that meets the safety standards, and ask professional people to install it on your behalf. It is best to "test the water" when buying, listen to the sound, and try the temperature; buy a jacuzzi with a skirt, if there is a problem with the motor, it is easy to disassemble and repair.

4. Smart installation: If a shower nozzle is added to the bathtub, the bathtub should be slightly wider to prevent water from splashing outside; the non-slip treatment should be selected to ensure safety. The shower head has two styles: wall-mounted and wall-mounted. The wall-mounted type is more suitable for home use. It is worth mentioning that the shower head and accessories of the bathtub are the same as the toilet and basin accessories, so you must choose matching products. The selection of its appearance is roughly the same as other sanitary products.