The controller can prolong the productive life of a well with low production, and decrease wear-and-tear of each mechanical part so as to decrease the cost of power utilization.
控制器可以延长低产油井的开采寿命，减少各机械部件的磨损，有效降低用电成本。
The utility model has the advantages of simple structure, low cost, little wear and tear, no dead point phenomenon and long service life.
本实用新型具有结构简单、成本较低、磨损小的优点，且不会出现死点现象，延长 了使用周期。
The SUPPLIER shall be responsible, at his own cost, for the timely production of a subsequent TOOL due to wear and tear.
若发生磨损，供应商应负责自担费用，及时生产后续工具。
The SUPPLIER shall be responsible, at his own cost, for the timely production of a subsequent TOOL due to wear and tear.
若发生磨损，供应商应负责自担费用，及时生产后续工具。
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