Public transient noncom-munity water systems provide water in places where people do not remain for long peri-ods, such as campgrounds and service stations.
Main products include: auto dry-mixing facility for oil well cement, no-subpressure remote monitor and control water supplying equipment, electrical sets and automation instrument.
Abstract The climate of southern area is muggy and wet.It is apt to multiply chironomid larva, which is the polluted insect in the system of supplying water of the city.