Everything You Need to Know About PS (Polystyrene) for Industrial Use


PS (Polystyrene) is a versatile plastic widely used in packaging, consumer goods, and industrial applications. Its lightweight, durable, and cost-effective properties make it a popular choice across industries. This guide will help you understand the different types of PS, their features, and how to source high-quality material from reliable suppliers.


How to Find Reliable PS from China in 2025


China remains a leading global supplier of PS, offering competitive pricing and large-scale production capabilities. To find trustworthy manufacturers:

  • Check supplier certifications (ISO, RoHS, FDA compliance).
  • Review customer feedback and order history on platforms like Alibaba.
  • Request material samples to test quality before bulk orders.
  • Verify production capacity and lead times.

What Buyers Should Know Before Buying PS from China


When importing PS from China, consider:

  • Shipping costs and import duties.
  • Minimum order quantities (MOQs).
  • Customization options (color, thickness, additives).
  • Payment terms and contract details.

Types of PS


There are three main types of PS:

  • General Purpose PS (GPPS): Clear, rigid, and brittle, commonly used for packaging.
  • High Impact PS (HIPS): Contains rubber additives for improved durability, ideal for appliances and toys.
  • Expanded PS (EPS): Foam-like material used for insulation and protective packaging.

Functions and Features of PS


PS offers several advantages:

  • Lightweight yet strong.
  • Excellent electrical insulation properties.
  • Resistant to moisture and chemicals.
  • Easily molded into various shapes.

Scenarios of PS


PS is used in:

  • Food packaging (containers, cutlery).
  • Consumer electronics (TV housings, refrigerator liners).
  • Medical devices (petri dishes, test tubes).
  • Construction (insulation panels).

How to Choose PS


Select the right PS based on:

  • Application requirements (rigidity, impact resistance).
  • Environmental conditions (temperature, UV exposure).
  • Regulatory compliance (food-grade, medical-grade).
  • Budget constraints.

PS Q & A


Q: Is PS recyclable?
A: Yes, but recycling rates vary by region. EPS is more challenging to recycle due to its lightweight nature.

Q: What's the difference between PS and PP?
A: PP (Polypropylene) has higher heat resistance and flexibility, while PS is more rigid and cost-effective.

Q: Can PS be used for food contact?
A: Yes, if it's FDA-approved food-grade PS.

Q: How do I store PS materials?
A: Keep in a dry, cool place away from direct sunlight to prevent degradation.

Q: What's the typical lead time for PS orders from China?
A: Usually 2-4 weeks, depending on order size and customization requirements.