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About product and suppliers:
        Alibaba.com offers 1,994 closed hot water system products. About 71% of these are solar water heaters, 4% are pumps, and 2% are industrial chiller. 

A wide variety of closed hot water system options are available to you, such as ce, cb, and rohs. You can also choose from water source heat pump, evacuated tube, and flat-plate. As well as from freestanding, wall mounted. And whether closed hot water system is stainless steel, or plastic. 

There are 1,994 closed hot water system suppliers, mainly located in Asia. The top supplying country is China (Mainland), which supply 100% of closed hot water system respectively. 

Closed hot water system products are most popular in South America, Western Europe, and Domestic Market. 

You can ensure product safety by selecting from certified suppliers, including 1,647 with ISO9001, 741 with Other, and 244 with ISO14001 certification.