1.304 stainless steel 2.for company,office,and public places; 3.380V,50Hz; 4. ... cup of water, the quantity of fetching water is not limited, the more water you get, the more water cost ... students to place some water boilers that provided by our company for free, then all the charge of water and ... electricity is paid and managed by our company. Besides, we provide the free service for the ...