As a public utility, water supply industry has the particularity itself-natural monopoly and social commonweal, which is not in the general companies' possession.
供水行业作为社会公用事业，其自身具有通常意义的企业所不具有的特殊性—自然垄断性及社会公益性。
2
The utility model does not increase the possession area of the computer room, thus it can save land occupation greatly.