Specialty Engineering Plastics Supplier China —PEEK / PEKK / PPS / PPSU / PAS / PI / PAEK / PBI
High-temperature, high-rigidity specialty engineering plastics for aerospace / medical / semiconductor / EV battery / 5G connector / chemical processing applications. Direct sourcing from China tier-1 manufacturers. FOB Shanghai / CIF major ports. 25 kg MOQ. 24h quote response.
Grades in This Category
| Grade | Full Name | Sub-category | Top Applications |
|---|
| [PEEK](/products/peek/) | Polyetheretherketone | 1.1 High-Temp Specialty (260°C) | Aerospace / Medical |
|---|---|---|---|
| [PEKK](/products/pekk/) | Polyetherketoneketone | 1.1 High-Temp Specialty | Aerospace / Oil & Gas |
| [PPS](/products/pps/) | Polyphenylene Sulfide | 1.1 High-Temp Specialty | Electronics / Automotive |
| [PES](/products/pes/) | Polyethersulfone | 1.1 High-Temp Specialty | Medical / Electronics |
| [PSU](/products/psu/) | Polysulfone | 1.1 High-Temp Specialty | Medical / Food |
| [PPSU](/products/ppsu/) | Polyphenylsulfone | 1.1 High-Temp Specialty | Medical USP VI |
| [PAS](/products/pas/) | Polyarylsulfone | 1.1 High-Temp Specialty | Higher-temp |
| [PI](/products/pi/) | Polyimide | 1.1 High-TempSpecialty | High-purity Electronics |
| [PAEK](/products/paek/) | Polyaryletherketone | 1.1 High-TempSpecialty | PEEK-upgrade |
| [PBI](/products/pbi/) | Polybenzimidazole | 1.1 High-TempSpecialty | Military 550°C |
Why Specialty Engineering Plastics?
Specialty engineering plastics are high-performance polymers designed for extreme environments where commodity plastics (PP / PE / PVC / ABS) fail:
| Property | Specialty Plastics | Commodity Plastics |
|---|
| **Continuous service temp** | 200-340°C (PEEK / PBI / PI) | 80-100°C (PP / PE) |
|---|---|---|
| **Tensile strength** | 90-220 MPa (PEEK / PEKK / PPS) | 20-50 MPa (PP / PE) |
| **Chemical resistance** | Excellent (PEEK / PPS / PI) | Limited |
| **Flame rating (UL94**) | V-0 standard | V-2 / HB only |
| **FDA / USP VI biocompatibility** | PEEK / PPSU / PEI | None |
Applications by Industry
| Industry | Recommended Grades |
|---|
| **Aerospace structural** | PEEK / PEKK / PI / PBI |
|---|---|
| **Medical implants / surgical** | PPSU / PEEK / PEI |
| **Semiconductor wafer handling** | PI Film / PPS |
| **EV battery insulation** | PI Film / PPS |
| **5G connectors** | LCP / PA9T / PPA (NOTE: LCP/PA are in High-Performance Polyamides category) |
| **Chemical processing valves** | PPS / PEKK / PEEK |
| **Military / defense** | PBI / PI / PEEK |
Top Sellers (sub-group 1.1 High-TempSpecialty)
PEEK — Polyetheretherketone
- 260°C continuous service temp
- High rigidity / high strength / high purity
- Top choice for aerospace brackets + medical implants + semiconductor
- Available: Nature (PPS grade not on our board), Glass-filled, Carbon-filled
PEKK — Polyetherketoneketone
- Higher temp performance than PEEK
- Used in aerospace / oil & gas downhole
- Available: Standard, Glass-filled
PPSU — Polyphenylsulfone (Medical grade)
- USP Class VI certified
- Repeatedly sterilizable (autoclave / gamma)
- Top choice for medical device housings + surgical tools
- Available: Natural (transparent amber), Glass-filled, Carbon-filled
PI — Polyimide
- Highest temp performance of thermoplastics
- Used in semiconductor wafer handling + high-purity electronics
- Available: PI, TPI (Thermoplastic), CPI, PI Film (subdivisions)
PBI — Polybenzimidazole
- 550°C extreme temperature rating
- Military / aerospace / extreme high-temp electronics
- Limited supply chain, premium pricing
Contact — 24h Quote
Daishuming Lingli (代书命) — Founder & Sales Director
📱 +86-13922534393 | 📧 [email protected]
Send: grade + quantity + application + destination → 24h reply with TDS / MSDS / RoHS / REACH + FOB Shanghai pricing.
*© 2025-2026 Huizhou Lingli Trading Co., Ltd. — Specialty Engineering Plastics International Trading from China*
Grades in Specialty Engineering Plastics
PEEK
**PEEK** (Polyetheretherketone, 聚醚醚酮) is a **high-performance semi-crystalline t...
PEKK
**PEKK** (Polyetherketoneketone, 聚醚酮酮) is a **next-generation polyaryletherketon...
PPS
**PPS** (PolyphenyleneSulfide, 聚苯硫醚) is a **high-performance semi-crystalline th...
PES
**PES** (Polyethersulfone, 聚醚砜) is an **amorphous transparent thermoplastic** of...
PSU
**PSU** (Polysulfone, 聚砜) is an **amorphous transparent thermoplastic** offering...
PPSU
**PPSU** (Polyphenylsulfone, 聚苯砜) is an **amorphous thermoplastic** offering:...
PAS
**PAS** (Polyarylsulfone, 聚芳砜) is a **higher-temp specialty** polymer with bette...
PI
**PI** (Polyimide, 聚酰亚胺) is the **highest-temperature thermoplastic** available,...
PAEK
**PAEK** (Polyaryletherketone, 聚芳醚酮) is a **PEEK-upgrade** variant offering bett...
PBI
**PBI** (Polybenzimidazole, 聚苯并咪唑) is the **highest continuous service temp ther...
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