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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.
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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.
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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.
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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.
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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.
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Q Does PRES Group provide OEM/ODM services for custom plastic components?
A Yes. We offer a complete one-stop service including mold design, injection molding, and CNC machining. We can take your project from raw material selection to finished, precision-engineered parts.
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Q Can you provide customized colors or reinforced grades (like Glass Fiber filled) for raw materials?
A Absolutely. We can customize thermoplastic elastomers and engineering plastics with specific additives like Glass Fiber, Carbon Fiber, or UV stabilizers to meet your mechanical and aesthetic specifications.
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Q Are your plastic materials compliant with international standards like RoHS, REACH, or FDA?
A Yes, most of our engineering plastics and fluoroplastics are compliant with RoHS and REACH. For food-grade or medical applications, we provide specific materials that meet FDA or USP Class VI standards. Certificates are available upon request.
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Q How does PRES Group ensure the quality of finished injection-molded parts?
A We implement a strict QC process involving First Article Inspection (FAI), in-process sampling, and final OQC (Outgoing Quality Control) using advanced measuring tools like CMM to ensure 100% compliance with your drawings.
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Q What is the typical lead time for custom mold design and sampling?
A Generally, mold design and T1 sampling take 3 to 5 weeks, depending on the complexity of the part. For raw material stock, we can ship within 3-7 business days.
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Q Do you support small-batch prototyping before mass production?
A Yes, we support our clients' business growth by offering low-volume production and rapid prototyping services via CNC machining or 3D printing before committing to high-volume injection molds.
