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

  • 29

    10.2026

    Operation modes of hydrocyclones
    Hydrocyclones can be designed as counterflow or unidirectional flow according to the flow directions of the reject and accept relative to the inlet. In counterflow cyclones, the inlet and accept connections are at one side and the reject outlet is at opposite side. In unidirectional flow cyclones, the accepts and rejects connections are opposite the…
  • 14

    10.2026

    Yunda @ CIPTE 2026: Technical Seminar on New Technologies and Equipment
    The Yunda @ CIPTE 2026 technical seminar focused on the latest technologies and equipment developed by Yunda Paper Machinery, covering the following topics: 🎉🎉 Yunda Paper Machinery’s Successful Showcase at CIPTE 2026!
  • 29

    09.2026

    Basic physical principles of hydrocyclones
    As simple the basic design of a cleaner or hydrocyclone is as complex is the flow within such an apparatus. Figure 1 shows a sketch of the basic design parameters of a hydrocyclones. The fluid is pumped through the inlet and due to the geometry of the cleaner a rotating flow develops. In steady state…
  • 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.…
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