Filtration: that is, filtering sand tanks, is the main product of the body of water is essential for clean. (Such as North Wo, Liansheng, Chiba, etc.)
Transmission: the piece of pipe, but also includes a variety of plastic parts, such as inlet and outlet settings.
Power: pumps and other equipment.
Lighting: underwater lights, it is recommended that the quality of the underwater lights, now with the patch is more.
Constant temperature: heating equipment, heat pumps and so on.
Control: villa swimming pool because there is no person in charge, it is recommended that the automatic control equipment, I recommend the use of the North Ward automatic controller, more beautiful look and feel of science and technology.