Quality Control

Committed to Quality, Built to Last

Every product we deliver is backed by rigorous standards, precise craftsmanship, and a promise of consistency.

At Lingke, we believe that quality is engineered into every stage of development—not just the final product. From precision component fabrication to rigorous assembly protocols, our entire workflow is built to deliver consistency, safety, and performance.

All ultrasonic welding machines undergo multi-step functional testing and calibration beyond standard industry requirements. With advanced diagnostic systems and a dedicated quality team, we ensure each machine delivers accurate results, stable output, and dependable operation from day one.

Total Quality Management System

Lingke operates with a fully integrated quality management framework that spans the entire production lifecycle—from precision machining to equipment calibration and final testing. Certified to international standards, our system emphasizes process discipline, real-time monitoring, and proactive quality control. Every department follows unified protocols to ensure each ultrasonic welding machine meets the highest benchmarks for reliability, accuracy, and safety.

Lingke Quality Control – Step One

Quality Begins with Core Components

We select high-performance materials and precision-engineered parts to ensure structural integrity and long-term reliability from the start.

Transducer material composition verification
Booster and horn dimensional inspection
Circuit board soldering quality check
Housing and frame flatness testing

Lingke Quality Control – Step Two

Process Monitoring from Assembly to Calibration

Every step, from mechanical assembly to ultrasonic tuning, is executed under strict protocols and tracked by real-time systems to maintain performance consistency.

Frequency and amplitude alignment test
Welding head installation torque check
Ultrasonic energy output validation
PCB and display function diagnostics

Process Monitoring from Assembly to Calibration

Lingke Quality Control – Step Three

Comprehensive Testing Before Shipmen

Before delivery, each machine undergoes final performance, durability, and safety tests to ensure it meets or exceeds global customer standards.

Continuous welding stability trial
Overload protection function test
System aging and burn-in validation
External structure and user interface inspection

Certificates

Our products have obtained multiple international certifications, including EU CE certification, North American NRTL certification, and more, ensuring compliance with global environmental and safety standards for entry into international markets.