A bathtub with spraying nozzles will be generally referred to as a massage bathtub by an average consumer. In fact even though a bathtub for hydrotherapy and one for massage share similar appearance, the both have clear-cut definition and difference.

A spa bathtub (a bathtub for hydrotherapy) and a massage bathtub have different applications just as their names show. A spa bathtub is used for therapy, relaxation and leisure, and installed in such leisure places as a toilet, a sunhouse,a basement, a swimming pool, a villa and a courtyard, yet a massage bathtub is just limited in a bathroom. Besides application, they differ obviously from each other in function and efficacy.

As scientific study shows, water’s buoyancy can lose 75 to 85 percent of human weight. Water cannot only help to relax a bather from head to foot, but also help to release the pressure of his/her articulation and muscle. This scientific principle is adopted in the design of a spa bathtub. That is to say, when a bather sits into a spa bathtub, water can reach his/her neck so that they can fully enjoy the complete relaxation from its buoyancy.Yet most of massage bathtubs are rather shallow in depth design. So a bather will never enjoy floating after a seat, so failing to achieve a state of whole relaxation. This distinction is obvious for every average consumer.

Soaking into hot water with constant temperature can increase body temperature and expand blood vessel to aid circulation. A spa bathtub can automatically heat cold water to fixed temperature and then preserve the heat continuously and accurately, so that a bather can take a bath free from care and at all times. Besides, hot air, generated during equipment operation, would be sent into the bathtub through nozzles, as ensured in the hi-tech design. Yet unlike a spa bathtub, cool air will be absorbed into a massage bathtub and cool the water, so a thorough hydrotherapy cannot be achieved.

A massage bathtub can achieve massage by transmitting water and air with nozzles. Hot running water from the nozzles can relax muscles and help human body to release natural pain-killer-endorphin. Of course, the effect of a massage does not only depend on the heat of water, but also its spraying force and positions. Compared with a massage bathtub, a spa bathtub has 5 to 10 times of the spraying force and consists of over a decade multifunctional massage nozzles at different positions ( a function system diagram of a therapy bathtub can be referred to). All in all, a massage bathtub stand no comparison with a spa bathtub.

For a massage bathtub, how to preserve a bathtub and water clean is a difficult problem which has not been solved for years. After each bathing, a massage bathtub needs a quick cleaning because some dirt will be left over on its surface. Besides, bacteria will generate in the sewage remaining inside tubes and equipment if a massage bathtub is not used for days. So next time, the bacteria will be led into the massage bathtub through the nozzles and harm the skin of the bather. Yet this puzzle is cracked very thoroughly by a spa because it possesses a distinctive comprehensive filtration and disinfection system. And the system is composed of automatic 100 percent no-bypass filtering circulation, high-effective ozone sterilization, siliver ion purification. Special additive will be used at fixed periods , thus the water in spas will keep as clear as crystal at all times.

A spa bathtub is preeminent in environmental protection and conservation of energy. Its distinctive comprehensive filtration and disinfection system works like a minitype water treatment factory, so bathing water can keep crystal clear as long as six to twelve months and then need a change. Besides, a spa bathtub benefits from high- density, multi layer, sealed insulating material which can decrease its energy consumption and noise at maximum as the material guarantees. And the multi-functional insulating cover will provide a bathtub for valuable heat and energy preservation, thus a spa bathtub will just consume electricity as low as two to three kilowatt-hour after a daily normal operation. So we can say a spa bathtub supplies us a low-consumption, first-rate enjoyment.

A spa bathtub has created a miracle and this has been proved by its 30-year experience and over 700,000 users in the world and will also be witnessed by increasing Chinese consumers.