Patent
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Patent for Invention：Preparation method of porous surface heat exchange tube of thermally-sprayed iron-based powder -
Patent for Invention：Preparation method of porous material of spraying wire mesh -
Patent for Invention：Ultrasonic flaw detection method for computer-assisted checking -
Patent for Invention：Twisted tube heat exchanger -
Patent for Invention：U-shaped tube head polishing device -
Utility Model Patent Certificate：U-shaped tube bundle heat exchanger -
Utility Model Patent Certificate：Special pipe penetrating tool for U-shaped pipe -
Utility Model Patent Certificate：Pressing tool for eccentric reinforcement pad -
Utility Model Patent Certificate：Double-sided enhanced heat transfer heat exchanger -
Utility Model Patent Certificate：Hoisting device capable of largely hoisting manhole cover -
Utility Model Patent Certificate：Hoisting device -
Utility Model Patent Certificate：Multifunctional compact heat exchanger
