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

  • 21

    09.2026

    Vietnam Dong Phat ECO Paper 250,000 TPA Packaging Paper Project
    On September 16, 2026, during the China International Paper Technology Exhibition(CIPTE), Yunda successfully signed a contract with CỔ PHẦN GIẤY ĐỒNG PHÁT ECO (Vietnam) for a 250,000 TPA packaging paper project, covering the complete stock preparation and approach flow systems. The project also includes Yunda first 3,750 mm drum pulper delivered to the Vietnam market.…
  • 08

    09.2026

    Yunda Wins Stock Preparation System Order for Liansheng Pulp & Paper’s 400,000 TPA Tissue Paper Project
    Intelligent Solutions · Dedicated Service to the Pulp & Paper Industry In August 2026, Yunda officially signed a strategic contract with Liansheng Pulp & Paper (Zhangzhou) Co., Ltd. for the supply of pulping equipment. Yunda will provide key stock preparation equipment and a broke handling system solution for its 400,000-ton-per-year tissue paper production line. The…
  • 13

    08.2026

    Cleaning (Separation in centrifugal field)
    Cleaning is a separation process which makes use of centrifugal forces created by a rotating flow of the pulp suspension. It can be found directly after pulping in the form of high density cleaning at consistencies of about 3 to 5 % and later in the process at consistencies in the range of 0.8 to 2 %.…
  • 18

    07.2026

    LC pulpers and Drum pulpers
    LC pulpers LC pulpers process recovered paper in loose form or bales that require opening but not necessarily dewiring. LC pulpers are most commonly used in recovered paper processing for manufacturing packaging paper and board. Figure 4 shows the basic Iayout of an LC pulper for stock consistencies up to about 6 %. Pulpers of…
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