QQS provides high-precision plastic injection molding services for global customers in consumer electronics, smart wearables, medical devices, home appliances, automotive components, and industrial products.

With 26 precision injection molding machines ranging from 100T to 750T, we support everything from mold trials and pilot runs to stable high-volume production. By combining in-house mold making, injection molding, SMT assembly, and final product assembly, we provide a true one-stop manufacturing solution that shortens lead time and ensures consistent quality.

Injection Molding Capabilities

• 26 Precision Injection Molding Machines (100T–750T)

• 24/7 Mass Production

• Mold Trial & Production Validation

• Scientific Process Setup

• Dedicated Project Management

• ISO 9001:2015 Certified Manufacturing

Molding Technologies

Our engineering team has extensive experience with various molding technologies, including:

• Overmolding

• Insert Molding

• In-Mold Labeling (IML)

• High-Temperature Engineering Plastics

• Bi-injection Molding

Materials We Process

We process a wide range of engineering and commodity plastics, including:

Engineering Plastics

• PA

• POM

• PC

• PBT

• PA+GF

General Plastics

• PP

• ABS

• HDPE

• LDPE

• PMMA

• TPE

High-Performance Plastics

• PPS

• PPSU

• PES

• PEEK

Production Stability & Quality Control

At QQS, quality is built into the manufacturing process—not just inspected at the end.

For critical dimensions, we perform CPK (Process Capability) studies to verify production stability and ensure the molding process remains statistically capable throughout mass production. Our engineering team continuously monitors key process parameters to minimize variation and maintain consistent product quality.

Our quality management system includes:

• First Article Inspection (FAI)

• CPK Process Capability Study

• In-Process Quality Control (IPQC)

• Final Quality Inspection (FQC)

• CMM Dimensional Measurement

• Scientific Process Validation

• SPC Monitoring (upon customer request)

By focusing on process capability, repeatability, and continuous improvement, we help customers achieve reliable production from the first part to the millionth.

Your Reliable Manufacturing Partner

Whether you require precision plastic components, OEM manufacturing, or a complete ODM solution, QQS is committed to delivering high-quality products with stable production, fast response, and dependable engineering support.

From precision tooling to mass production, QQS is your trusted manufacturing partner in China.