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  Under the current policy system, the exemption of water resource fees for reclaimed water will widen the price gap between tap water and reclaimed water, which will benefit the development of the non-negative pressure stainless steel water supply equipment industry and alleviate the current situation of water shortage in China to a certain extent. Zhongying will strengthen the establishment of long-term strategic cooperation alliances with well-known domestic universities, research institutions, design institutes, and construction units in environmental governance, build a platform for technical exchanges and cooperation, give full play to the existing superior forms, achieve resource sharing and complementary advantages, and jointly provide better services for customers.

I. Overview of Non-negative Pressure Stainless Steel Water Supply Equipment
      The non-negative pressure stainless steel water supply equipment is a new type of variable frequency device. It is divided into box-type non-negative pressure equipment and tank-type non-negative pressure equipment. The system is connected in series at places where the pressure of the municipal tap water pipe network is insufficient. The sensor detects the outlet pressure and compares it with the set value, calculates the required pressure value, and determines the number of water pumps to be put into operation and the motor speed. The non-negative pressure stainless steel water supply equipment maximizes the use of the original pressure of the municipal tap water pipe network, does not generate negative pressure on the municipal pipe network, replaces the old-fashioned pool with a stainless steel water tank or a non-negative pressure tank, and reduces the secondary pollution of water. It is a new generation of energy-saving product in the water supply field.


II. Comparison between non-negative pressure stainless steel water supply equipment and variable frequency constant pressure water supply
1. Variable frequency constant pressure water supply cannot be directly connected to municipal tap water pipes. A water tank must be built, and a negative pressure tank can replace the water tank, saving a lot of costs.
2. The negative pressure tank replaces the water tank, with a small footprint and easy placement.
3. The water tank should be cleaned regularly, while no cleaning is needed for non-negative water supply pressure.


III. Characteristics of Non-negative Pressure Stainless Steel Water Supply Equipment
1. No negative pressure
    The system, when directly connected to the municipal water supply network for water intake and pressurization, will not cause negative pressure in the municipal water supply network.
2. High-quality intelligent computer control
    It is specially developed independently, with diversified functions, and can provide high-level precision control, which has reached a high level.
3. Pressure borrowing (or stacking)
    The non-negative pressure variable frequency water supply equipment operates by utilizing the pressure of the tap water pipe network and increasing the pressure based on this. Compared to pumping water from a conventional reservoir, it can reduce the number of pumps or lower the speed during operation to achieve energy savings.
4. Power outages and water supply disruptions
    When the power supply line is interrupted, the system can maintain water supply through bypass and other means, that is, the system automatically switches to municipal tap water pressure water supply during power outages.
5. Sanitation
    The overflow components are made of stainless steel and other food-grade materials, meeting the hygiene standards for water contact. The box-type non-negative pressure device ensures that the water stored in the water tank is automatically refreshed daily through user water usage, while the closed non-negative pressure device provides real-time replacement to ensure water hygiene.
6. Energy conservation
    The system does not have water storage facilities such as reservoirs, which saves floor space. The system has been operating efficiently and effectively, saving more than 60% of energy. The municipal pipe network has a certain pressure, and only needs to be supplemented with pressure based on the municipal pressure during operation. The system operates fully automatically without the need for dedicated personnel to monitor it. Additionally, because there are no water storage facilities such as reservoirs, and no water quality treatment equipment, regular cleaning and disinfection work is eliminated. Therefore, the energy-saving effect is very significant.


Section 4: Typical Applications of Non-negative Pressure Stainless Steel Water Supply Equipment:
Residential water use: such as high-rise buildings, residential water areas, villas, etc;
Public places: such as hospitals, schools, stadiums, golf courses, airports;
Commercial buildings: such as hotels, office buildings, department stores, large sauna baths, etc;
Irrigation: such as parks, playgrounds, orchards, farms, etc;
Manufacturing industry: such as production and manufacturing, washing equipment, food industry, factories;
Others: Renovation of pools and other forms of water supply;