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  • Invention patent certificate of fin stamping automatic production line for open heat exchanger

    Invention patent...

  • Precision high speed fin stamping automatic generation line (international standard product mark certificate)

    Precision high...

  • Patent certificate of utility model for aluminum foil clamping mechanism of decoiler in automatic stamping production line of heat exchanger fin

    Patent...

  • Patent certificate of integrated die changing device for oil tank

    Patent...

  • Invention patent certificate of fin punch

    Invention patent...

  • Patent certificate of U-tube expander

    Patent...

  • Patent certificate for utility model of energy saving material suction mechanism of 2000mm single row long fin double fan

    Patent...

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