Injection Molding

Our injection molding shop produces mass-production parts for customers every day. We can provide custom injection molding with advanced injection machines when required. Insert molding and over molding can also be performed based on customer needs. These parts are commonly used in many industries, such as home appliances, medical devices, weapon accessories, printer accessories, automobile parts, connector parts, and more.

PTMS injection machines can run all types of resins-from commodity to engineered grades, high-temperature materials to filled materials. We only work with high-quality plastic resin suppliers in the industry, avoiding low-grade materials. All plastic resin we use is 100% qualified.

Resin Types:

– Common Resin: ABS, PC, PC+ABS, SAN, HIPS, GPPS, HDPE, LDPE, PP, PE

– Engineering Resin: PP+GF, PPO, PPS, POM, POM+GF, PBT, PBT+GF, Nylon, Nylon+GF

– Soft Resin: PVC, TPE, TPR, TPU, Silicone

– Over Molding Resin: ABS-TPE, TPR, PC-TPE, PC+ABS-TPE, Nylon-TPE

The plastic resin suppliers must provide certifications, including ISO, ROHS, and others. Customers must check the resin report and confirm the correct plastic materials before mold making. All materials we use are 100% brand-new because top-quality products are the foundation of our company.

We upgraded our production equipment to automated injection machines in 2015. Twenty injection machines were equipped with robots, allowing plastic parts and runners to fall automatically. This ensures reliable, efficient, and cost-effective injection molding production. Our company can perform secondary operations such as printing, painting, and plating if required.

As an ISO 9001-2008 certified plastic injection molding company, PTMS is very strict with product quality. There are eight QC technicians for each shift in our shop. They inspect samples using equipment such as CMM, projector, 2DMI, micro glass, height altimeter, block gauge, pin gauge, L-square, calipers, micrometers, and more. Quality reports (FAI, SPC, CPK, etc.) will be sent to customers for review. Custom plastic injection molding is available to customers at any time.

Quality & Compliance Capabilities:

– Full traceability system: Material batch tracking and production record retention.

– Mold maintenance program: Scheduled mold cleaning and preventive maintenance to ensure long mold life.

– Dimensional validation: CMM-based dimensional reports for critical components.

– Packaging & logistics options: Anti-scratch packaging, custom labeling, and export-grade cartons.

– NDA & confidentiality support: Secure handling of drawings and project files.

PTMS is a professional custom plastic injection molding manufacturer in China, providing complete solutions from engineering design to mold manufacturing, automated injection molding mass production, and final quality assurance. With advanced equipment, experienced engineers, and strict ISO-certified quality systems, PTMS supports global customers across automotive, medical, electronics, home appliances, and industrial sectors. Our goal is to deliver stable, top-quality, and cost-effective injection molding services for both simple and highly complex plastic components.

PTMS provides comprehensive engineering support to ensure every project begins with a strong technical foundation. Our engineering team collaborates closely with customers to optimize part design, improve manufacturability, and reduce production risks.

– DFM analysis: Identify potential molding issues early and optimize part geometry for stable production.

– 3D modeling & simulation: Visualize part structure and evaluate feasibility before tooling.

– Material recommendations: Select suitable resins based on strength, durability, temperature resistance, and cost.

– Tolerance planning: Ensure precision for critical components such as gears, connectors, and medical housings.

PTMS builds high-precision molds using advanced machining technologies and high-grade steel to ensure long mold life and stable injection molding mass production.

– CNC & EDM machining: Achieve tight tolerances and complex mold structures.

– Single-cavity & multi-cavity molds: Support prototype, low-volume, and high-volume production.

– Hot-runner systems: Reduce material waste and improve cycle efficiency.

– T1 sampling & optimization: Validate mold performance and refine part quality before mass production.

PTMS operates automated injection molding lines to ensure consistent quality, stable cycle times, and efficient production output.

– Automated part removal: Robots ensure clean, scratch-free handling of molded parts.

– Runner separation automation: Improves efficiency and reduces manual labor.

– Real-time process monitoring: Ensures stable molding conditions and consistent part quality.

– High-volume capability: Supports continuous production for large-scale orders.

PTMS provides advanced injection molding capabilities to support complex structures, multi-material components, and precision-critical applications. These capabilities help customers achieve better functionality, improved aesthetics, and faster development cycles.

– Insert & over-molding engineering: Support for metal inserts, soft-touch surfaces, and multi-material structures.

– Material selection guidance: Recommendations based on strength, temperature resistance, chemical resistance, and cost.

– Color matching & texture options: Pantone color matching and surface finish customization.

– High-precision molding: Tight tolerance control for connectors, gears, and medical components.

– Rapid sampling: Fast T1 samples to accelerate project validation.

PTMS maintains strict quality standards to ensure every part meets customer specifications and regulatory requirements. Our quality system supports full traceability, dimensional accuracy, and secure project handling.

Full traceability system: Material batch tracking and production record retention.

Mold maintenance program: Scheduled mold cleaning and preventive maintenance to ensure long mold life.

– Dimensional validation: CMM-based dimensional reports for critical components.

– Packaging & logistics options: Anti-scratch packaging, custom labeling, and export-grade cartons.

– NDA & confidentiality support: Secure handling of drawings and project files.

PTMS supports diverse industries with varying performance, compliance, and aesthetic requirements.

– Automotive components: Durable, heat-resistant, and precision-fit parts.

– Medical device housings: Clean, stable, and biocompatible materials.

– Consumer electronics: High-precision, aesthetic, and thin-wall components.

– Home appliances: Impact-resistant and cost-effective parts.

– Industrial equipment: High-strength and wear-resistant components.

PTMS combines engineering expertise, advanced equipment, and strict quality control to deliver reliable and cost-effective injection molding services. Our long-term commitment to quality and customer satisfaction makes us a trusted partner for global brands.

– 20+ years of manufacturing experience: Proven track record in custom injection molding since 2002.

– ISO-certified quality system: Ensures consistent quality and process control.

– Automated production lines: Improves efficiency and reduces labor cost.

– Strong engineering support: DFM, material guidance, and tolerance planning.

– Flexible production volumes: Prototype, small batch, and mass production.

– Global customer service: Responsive communication and reliable project management.

PTMS has supported customers across multiple industries with successful injection molding projects. Our case studies demonstrate our ability to solve engineering challenges, reduce costs, and improve product performance.

– Automotive connector housing: Improved tolerance stability and reduced cycle time by 18%.

– Medical device enclosure: Achieved high-precision molding with biocompatible materials.

– Consumer electronics shell: Delivered scratch-free, high-gloss surfaces using optimized mold design.

“PTMS delivered consistent quality and fast sampling for our new product line.”

– David Miller, Product Manager, Apex Packaging Solutions Inc. (USA)

“Their engineering team helped us optimize the design and reduce mold cost.”

– Kenji Tanaka, Senior Engineer, Nippon PackTech Co., Ltd. (Japan)

“Reliable supplier with stable mass-production capability.”

– Laura Schneider, Procurement Director, Kraften Industrial Systems GmbH (Germany)

PTMS supports prototypes, small batches, and mass production.

The customer owns the mold unless otherwise agreed.

STEP, IGS, X_T, STL, DWG, and PDF.

Yes, DFM is included before mold making.

Usually 3–6 weeks depending on complexity.

Yes, PTMS has dedicated machines for both processes.

Yes, confidentiality agreements are available.

PTMS provides reliable, top-quality, and cost-effective custom plastic injection molding services.

Contact us today to discuss your project and receive a free quotation.