Zhengzhou Yunda Paper Machinery Co., Ltd., since 1981, is a high-tech company. With its broad portfolio of products and services, Yunda sets standards in the Pulp & Paper and Solid Waste Sorting industries. Yunda has approximately 300 employees covering business in more than 40 countries.

Green and Intelligent Manufacture

Yunda provides system solutions for fiber processing and pulp making, including Recycled Fiber Processing Lines, Virgin Fiber Stock Preparation Lines, High-yield Mechanical Pulping Lines (i-BCTMP), Approach Flow Systems, Bale Breaking and Sorting Systems, and Closed Screening Systems for Chemical Pulp Lines. The key products are Conveyors, Bale Breakers, Pulpers, Pressure Screens, Screen Baskets, Cleaners, Refiners, Agitators, Thickeners, Thermal Shredders (Pressurized Refiners), Pre-steaming Bins, Plug Screw Feeders, Thermal Softening Tubes, Cyclones, Reaction Towers, Bleaching Towers, and Screw Presses.

Engineering-Procurement-Construction (EPC), professional and thoughtful one-stop service for you

Yunda has enlarged its sales scope to all over the world. By solid foundation and skilled technology, professional technical talents and service team bring professional service to customers.

Company News & Industry Trends

  • 12

    03.2026

    Let the Global Paper Industry Fall in Love with “Made in China” — Yunda Showcases at Multiple International Paper Industry Exhibitions
    May 7–9, 2025 — 2025 Vietnam International Paper & Packaging Exhibition (VPPE) May 7–9, 2025 — 2025 Turkey International Pulp, Paper & Disposable Products Exhibition June 5–7, 2025 — Yunda presents its innovative “i-BCTMP” process technology at the 2025 Guangzhou International Paper Expo June 11–13, 2025 — 2025 Asia Paper Exhibition June 25–26, 2025 — Latampaper Brasil 2025
  • 07

    03.2026

    Zhengzhou Yunda and Qian’an Boda Successfully Sign Contract for Complete Pulping Equipment for 150,000-Ton Bleached CTMP Project
    Green & Low-Carbon, Serving the Pulp and Paper Industry Zhengzhou Yunda Paper Machinery successfully signed a contract with Qian’an Boda (Hebei Qian’an Boda Paper Industry Co.,Ltd.) for the complete pulping equipment of the 150,000 Tons Bleached CTMP Project.
  • 22

    02.2026

    Separation processes
    Efficiency range The separation processes and their efficiencies depend on suspension properties such as consistency and flake and debris content. The same processing stages may be used several times in a stock preparation line, depending on the type and quantity of contaminants, to provide better effectiveness and increased reliability of processing machinery Figure 1 shows the efficiency scatter of…
  • 04

    02.2026

    General overview of unit operations
    Similar to virgin fibres, recycled-fibre stock must meet defined quality criteria for a given furnish. ln this sense, quality refers to the fibre characteristics, such as the type and condition of fines, and to additives and contaminants. Recycled fibre processing systems are significantly more complex than virgin-fibre systems for two reasons. First, the recovered paper…
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