# PRES

> PRES is a manufacturer of PEEK and high-performance engineering plastics, including PEI, PPSU, PPS and PSU. We provide custom compounds, sheets, rods, pellets and precision processing solutions.

## Website Language Versions
- [English](https://www.plastic-material.com): PRES|High-Performance Engineering Plastics Manufacturer

## Website Navigation
- [Home](https://www.plastic-material.com/index.html): Home
- [About Us](https://www.plastic-material.com/aboutus.html): About Us
- [Products](https://www.plastic-material.com/products.html): Products
- [Material](https://www.plastic-material.com/pa-material.html): Material
    - [PEI](https://www.plastic-material.com/pei.html): PEI
    - [PPS](https://www.plastic-material.com/pps.html): PPS
    - [PPSU/PSU](https://www.plastic-material.com/ppsppsupsu.html): PPSU/PSU
        - [PES](https://www.plastic-material.com/pes.html): PES
        - [PPSU](https://www.plastic-material.com/ppsu.html): PPSU
        - [PSU](https://www.plastic-material.com/psu.html): PSU
    - [PEEK](https://www.plastic-material.com/peek.html): PEEK
        - [PEEK profile and cutting service](https://www.plastic-material.com/peek-profile-and-cutting-service.html): PEEK profile and cutting service
    - [PVDF,PTFE,PFA](https://www.plastic-material.com/pvdf-ptfe-pfa.html): PVDF,PTFE,PFA
- [Service](https://www.plastic-material.com/service.html): Service
- [News](https://www.plastic-material.com/news.html): News
- [Contact Us](https://www.plastic-material.com/contactus.html): Contact Us
- [FAQ](https://www.plastic-material.com/faqlist.html): FAQ

## Product Category
- [PEEK Material](https://www.plastic-material.com/peek-material.html): PEEK Material
    - [PEEK Pellets](https://www.plastic-material.com/peek-pellets.html): PEEK Pellets
    - [PEEK Sheet](https://www.plastic-material.com/peek-sheet.html): PEEK Sheet
    - [PEEK Rod](https://www.plastic-material.com/peek-rod.html): PEEK Rod
    - [PEEK 3D Printing Filaments](https://www.plastic-material.com/peek-3d-printing-filaments.html): PEEK 3D Printing Filaments
    - [PEEK Film](https://www.plastic-material.com/peek-film.html): PEEK Film
    - [PEEK Powder](https://www.plastic-material.com/peek-powder.html): PEEK Powder
- [PEI Material](https://www.plastic-material.com/pei-material.html): PEI Material
    - [PEI Pellets](https://www.plastic-material.com/pei-pellets.html): PEI Pellets
    - [PEI Sheet](https://www.plastic-material.com/pei-sheet.html): PEI Sheet
    - [PEI 3D Printing Filaments](https://www.plastic-material.com/pei-3d-printing-filaments.html): PEI 3D Printing Filaments
    - [PEI Rods](https://www.plastic-material.com/pei-rods.html): PEI Rods
- [PPSU Material](https://www.plastic-material.com/ppsu-material.html): PPSU Material
    - [PPSU Pellets](https://www.plastic-material.com/ppsu-pellets.html): PPSU Pellets
    - [PPSU Sheets](https://www.plastic-material.com/ppsu-sheets.html): PPSU Sheets
    - [PPSU Rods](https://www.plastic-material.com/ppsu-rods.html): PPSU Rods
- [PPS Material](https://www.plastic-material.com/pps-material.html): PPS Material
    - [PPS Pellets](https://www.plastic-material.com/pps-pellets.html): PPS Pellets
    - [PPS Polyphenylene Sulfide Sheet](https://www.plastic-material.com/polyphenylene-sulfide-sheet.html): PPS Polyphenylene Sulfide Sheet
- [PA Nylon Material](https://www.plastic-material.com/pa-nylon-material.html): PA Nylon Material
    - [PA6 Material](https://www.plastic-material.com/nylon6-material.html): PA6 Material
    - [PA66 Material](https://www.plastic-material.com/nylon66-material.html): PA66 Material
    - [PA12 Material](https://www.plastic-material.com/pa12-material.html): PA12 Material
- [Thermoplastic Elastomer](https://www.plastic-material.com/thermoplastic-elastomer.html): Thermoplastic Elastomer
    - [TPU Pellets](https://www.plastic-material.com/tpu-mateial.html): TPU Pellets
- [3D Printing Filaments](https://www.plastic-material.com/3d-filaments.html): 3D Printing Filaments
- [Fluoroplastic Raw Material](https://www.plastic-material.com/fluoroplastic-raw-material.html): Fluoroplastic Raw Material
- [Plastic Granules](https://www.plastic-material.com/plastic-granules.html): Plastic Granules
- [Plastic Sheet&rods](https://www.plastic-material.com/plastic-sheet-rods.html): Plastic Sheet&rods

## FAQ
- **Q: What are the advantages of PEI materials?**
  A: The PEI material exhibits excellent dimensional stability and outstanding electrical properties. The low dielectric constant of PEI material ranges from 3.2 to 3.4 ( 106 Hz), with a low dielectric loss of only (3-8) \* 10 -3 (106 Hz), making it suitable for applications in high-frequency electrical components.
- **Q: What are the advantages of the dimensional stability of PEI materials?**
  A: The PEI material has a low shrinkage rate, only 0.5% - 0.7%, a low water absorption rate of 0.25%, and a low thermal expansion coefficient. It is suitable for manufacturing precise electronic components.
- **Q: What is polyetherimide used for?**
  A: PEI materials are mainly used in the electrical and electronic fields. It   can maintain insulation and dimensional stability at high temperatures, It is suitable for   manufacture connectors and switches, circuit boards, carrier chips, and coil cores.
- **Q: How do I choose between PEEK and PPS for high-temperature applications?**
  A: While both are high-performance plastics, PEEK offers a higher continuous service temperature (up to 250 ° C) and better mechanical strength. PPS is more cost-effective and provides superior chemical resistance. PRES Group provides data sheets for both to help you balance performance and budget.
- **Q: Which engineering plastics are best suited for CNC machining parts?**
  A: For precision parts, we recommend POM (Acetal) or Nylon 6/66 due to their excellent dimensional stability and low internal stress. Our machining department can advise on the specific grade based on your tolerance requirements.