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China New OTCBB The Patent Certificate The Award Certificate The Qualification Certificate The Test Report

The patent certificate

Guide water-stop vent float valve



Enhanced Self-Priming mixed-flow pump


Enhanced Self-Priming mud pump



Self-adjusting vertical long-axis sewage pump


Self-priming sludge stirring-drainage pumping device


Automatic control water supply device of high-speed self-priming pump


Function conversion device of Enhanced Self-Priming pump


Enhanced Self-Priming sewage pump


Enhanced Self-Priming split pump



Two-axis control box of suction vacuum device of split pump



Vertical-suction Enhanced Self-Priming pump



Gear mechanism of Enhanced Self-Priming pumps



Vertical-suction Enhanced Self-Priming split pump



Double-acting suction and discharge device



Slide lock-type centering guide


SD patent


Pipeline pump patent


Vertical pump patent



Three-linkage wrench patent


Suction & Exhaust device patent


Split centrifugal clean-water pump patent


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