1) water market: municipal tap water and municipal sewage treatment, characterized by * * * public utilities, large scale, small profits but quick turnover, rich statements, close cooperation with the government, and numerous companies and enterprises with monopoly positions in the national municipal field, such as state-owned enterprises, central enterprises and foreign capital. In China, state-owned companies are generally named after cities (with the participation of a few large private capitals), and they are in a monopoly position in local business because of their government resources and background. There are also large-scale foreign investments, and foreign state-owned enterprises have also set foot in China's water market. They are mainly engaged in the construction, operation, management and maintenance of water treatment facilities.

2) Water market: mainly aimed at a single enterprise, the factory market of sewage treatment, softened water, pure water and cooling water treatment or production. Mainly niche services, with relatively small goals and high profit margins, but the scale is very small. It is far away from the government, and only sewage is subject to its supervision. Other water supplies, purified water and cooling water are not under the control of the government and are not subject to government supervision. If the water market is operated as a company, it actually includes all the work of the water market, but the water market in the industry is more focused on serving and supporting individual enterprises, usually providing equipment and commissioning work for enterprises, and sometimes providing general contracting construction work, but generally not providing operation, maintenance and management work.