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Highlighted Companies

  • Suzhou Rico Machinery Co., Ltd (China): RICO, a professional CNC machinery company, who integrated research, development and... http://www.ricocnc.com
  • A Hay & Grain Co Inc (USA): involved in international trade import export. At Anderson Hay we offer a wide variety of feed... http://www.anderson-hay.com/


  • Altas Copco Neuman Esser Caremon Ingersoll Rand Kobelco Rider Rings - China

    price: contact company for price

    Donging manufactures a comprehensive range of piston

    rings, rider rings and rider bands to meet the

    requirement of majority of reciprocating and piston

    compressors by using a range of Dongyi Special

    Polymer Alloys, standard and special materials.

    Piston rings, rider rings and bands are manufactured in

    various designs:

    -One-piece or segmental straight

    -Angle cut

    -Step cut

    -Twin Ring

    -Double Twin Ring

    -Two Segment

    -Pressure balanced

    Dongyi serves custom-designs rings and has developed

    specific combinations for particularly problematic and

    demanding applications. Pressure balanced rings are

    available, when deemed appropriate for high pressure

    applications and piston/rider ring combinations are also

    available for more specific applications.

    PEEK Rider ring

    PTFE rider ring

    PPS rider ring

    PTWFE rider ring


    Company Contact:


    • Phone: 86057786627333

    • Address: No.48dongzheng Rd.,yongzhong street,longwan distri, wenzhou, China

    • Email: Email


    Published date: December 21, 2013 -

    • Business Description: For over 30 years, Wenzhou Dongyi maintains consistent growth as an

      Chinese domestic manufacturing and services company providing the

      highest quality products and services to the compression industry. The

      strategic network built by three generations provides operators with

      quality, precision engineered compressor components and support services

      that deliver reliable performance. Based on our sophisticated

      experiences and customer centric approach, we are prone to offer smart

      solutions.

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