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Professionalism & integrity win the respect of customers

Zhejaing JoySun

Established in 2005, we have built a comprehensive factory area that integrates synthesis factory, research and development center, and production management. As a professional manufacturer of chemical foaming agents, calcium zinc stabilizers, WPC wood plastic lubricants, and special additives.

Our Featured Products

More than a premium raw material supplier, we excel in foaming and wood-plastic core technologies, offering world-class foaming agents, calcium-zinc stabilizers, lubricants, and customized technical solutions.

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R&D & Technology

With large-scale R&D facilities and multi-level R&D platforms, sustained substantial R&D investment, a highly educated team, and industry-academia-research cooperation with universities.

Second Factory

Second Factory

  • 1600

    R&D site area

  • 11+Million USD

    6-year R&D investment

  • 20+Person

    Highly educated R&D team

  • 34

    Patents

Applications & Solutions
News
Releases

Stay updated on our latest corporate news, milestones, and exhibition insights—get details on participation, highlights, and on-site coverage to understand our strategic initiatives in real time.

Aug 202026
What Factors Should Be Considered When Selecting a TPEE Supplier?

1. Understanding Your TPEE Material Requirements Before Choosing a Supplier Selecting the right TPEE Supplier is not only about comparing prices. The first step is understanding the specific material

Aug 142026
How to Choose the Right PVC Flooring Stabilizer for Your Manufacturing Process?

The quality and performance of PVC flooring products largely depend on the stability of the formulation during processing. As PVC materials require high-temperature extrusion, improper stabilization c

Aug 072026
How to Choose a Reliable SPC Flooring Stabilizer Manufacturer for Your Flooring Business

The rapid growth of SPC (Stone Plastic Composite) flooring has increased demand for high-performance additives that can improve processing stability, product consistency, and long-term flooring perfor

Jul 312026
Uniform Cell Structure Explained: Why It Matters for High-Performance IXPP Foaming Agents

Foam engineers rarely get a support call because a part is "too foamy." They get the call because the foam looks inconsistent — dense in one spot, coarse in another, with a surface that telegrap

Jul 242026
What Are PVC Flame Retardant Additives and How Do They Work?

Fire performance has become one of the first questions building material buyers and profile manufacturers ask before placing an order. Whether the end product is a window profile or a drainage pipe, a

Jul 172026
What Is a PE Foaming Agent and How Does It Improve Polyethylene Processing?

In modern plastic manufacturing, reducing material consumption while maintaining product performance has become a major goal for processors. Polyethylene (PE), including LDPE, LLDPE, and HDPE, is wide

Jul 102026
Chemical Foaming Agent for 3D Printing: How It Creates Lightweight PLA Filament

Anyone sourcing materials for lightweight FDM printing eventually runs into the same question: what actually makes a filament "foam" inside the nozzle, and why do some lightweight PLA filaments print

Jul 032026
CPVC Additive Supplier Guide: Stabilizers, Modifiers & Lubricants Explained

CPVC compounds are widely used in hot and corrosive fluid transport systems, industrial piping, and pressure applications. However, due to their high chlorine content and narrow processing window, CPV

Jun 262026
What Is a PE Foaming Agent and How Does It Work?

Polyethylene is one of the most widely processed plastics in the world, yet many engineers and procurement specialists still underestimate what a well-chosen chemical foaming agent can do for their pr

Jun 182026
What Is TPEE Pellets? A Complete Guide to Thermoplastic Polyester Elastomer

1. Why Engineers Are Choosing TPEE Over Rubber & TPU For decades, engineers designing flexible components — automotive boots, cable jackets, industrial hoses — defaulted to vulcanized rubb

Jun 122026
EVA Foaming Agent for Shoe Soles: How to Select the Right Grade for Injection Molding

In EVA outsole production, the selection of a foaming agent grade is not a secondary formulation decision — it is the variable that determines whether a shoe sole meets dimensional tolerances, a

Mar 102026
Joysun Excellence Performance Management Training1

We take pride in our competent sci-tech team, launching new patented products annually. We have been consecutively awarded titlescal Device Co., Ltd. and a financial company.