Reciprocal Sewage Treatment Process is consisted of a group of units with aeration devices and interconnected by communicating pipes and control valves.
工艺由一组配有充氧装置的处理构筑物组成，其间设有连通管道及控制闸阀，能组成多种污水处理系统。
Headquartered in New Orleans, the group is committed to research and development of fluid control valves, fluid control equipment, production systems, in many countries, the production valve base.
集团总部位于美国新奥尔良市，集团致力于科研开发流体控制阀门，生产流体控制设备系统，在许多个国家均有生产阀门基地。
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