Quality Assurance at Tonza's system
Utilizing advanced manufacturing processes, stringent quality assurance protocols, and strict compliance with industry standards, we guarantee exceptional quality, precision, and durability for your prototypes and on-demand production parts.
Our Quality Policy
Using advanced testing technology and equipment, we inspect dimensions, hardness, tensile strength, and elongation throughout production to ensure superior performance and customer satisfaction.
TonZa is dedicated to continuously improving and optimizing all aspects of custom manufacturing, from prototyping to production, along with the corresponding quality control processes, including CNC machining, rapid prototyping, and rapid tooling.
We adhere strictly to the ISO 9001-certified quality management system, following standardized production procedures and work instructions. Utilizing advanced testing equipment, we meticulously measure and inspect each stage of production to ensure your project meets the highest quality standards.
Click: ISO 9001:2015 Certification
Implement standardized and scientific management practices, develop efficient workflows and operating guidelines, cultivate highly skilled employees, and enhance production efficiency.
Driven by customer expectations and values, we continuously enhance our operations and management, including production planning, process optimization, supply chain coordination, cost control, and workforce quality. We strive for continuous improvement, excellence, and greater customer satisfaction.

By implementing a comprehensive quality management system, we strengthen quality control and inspections at every production stage, optimize company processes, and enhance communication between customers and departments. We also foster employee quality awareness, drive technological advancements, and ensure the efficient production of high-quality products.
By implementing a comprehensive quality management system, we reinforce quality control and inspections throughout production, optimize company processes, and enhance communication between customers and departments. Additionally, we cultivate employee quality awareness, drive continuous technological advancements, and ensure the efficient production of high-quality products.
Quality Control Procedures
“Our quality process is integrated into every stage of the project, from RFQs to final production and shipment.“
Quality Control Systems for Machine Shop
Utilizing state-of-the-art testing technology and advanced equipment, we conduct thorough inspections throughout the entire production process, measuring dimensions, hardness, tensile strength, and elongation of workpieces to guarantee superior performance and ultimate customer satisfaction.
Incoming Inspection
We thoroughly inspect and test all materials supplied by our vendors to ensure they meet both customer requirements and our strict quality standards.
Sampling techniques:
① Hierarchical sampling
② Diagonal Sampling
③ Triangular sampling
④ S-type sampling
In-process Inspection
We thoroughly inspect and test all materials supplied by our vendors to ensure they meet both customer requirements and our strict quality standards.
Sampling techniques:
① Hierarchical sampling
② Diagonal Sampling
③ Triangular sampling
④ S-type sampling
Pre-Shipment Inspection
We thoroughly inspect and test all materials supplied by our vendors to ensure they meet both customer requirements and our strict quality standards.
Sampling techniques:
① Hierarchical sampling
② Diagonal Sampling
③ Triangular sampling
④ S-type sampling
Equipment
“Testing instruments play a crucial role in production, ensuring the manufacturing of high-quality products. Our facility features specialized workshops equipped with advanced technology, enabling comprehensive inspections and reinforcing our stringent quality control processes.”
Coordinate Measure Machine
High Performance 2D Image
Hardness Tester
Surface Roughness Tester
Impact Tester
Tensile Tester
Item | Model | Brand | Accuracy | Qty | Period |
---|---|---|---|---|---|
2D CMM | VMS-3020F | Ada | 0.005mm | 1 | 1 year |
2.5D CMM | CNC-4030AH | Ada | 0.005mm | 1 | 1 year |
3D CMM | CAPTUM 7/10/6 | Zeiss | 0.001mm | 1 | 1 year |
3D CMM | EXPERT 15108 | Leeder | 0.001mm | 1 | 1 year |
3D CMM | FLY1086 | Leeder | 0.001mm | 1 | 1 year |
Semi-automatic altimeter | LH-600E/EG | Mitoyo | 0.001mm | 1 | year |
Semi-automatic altimeter | V4-400 | TRIMOS | 0.001mm | 1 | 1 year |
High precision yaw meter | J2-D-200 | Azamara | 0.002mm | 1 | 1 year |
Manual altimeter | 0-600mm | Mitoyo | 0.01 mm | 1 | 1 year |
Cyindricity instrument | 1494x862x1685 | will | 0.001mm | 1 | 1 year |
Vickers hardness tester | HV-1000 | Heng | 1 HRB | 1 | 1 year |
Rockwell hardness tester | HR-150A | Dr. force | 2HRC | 1 | 1 year |
Surfagage | 178-039 | Mitoyo | 0.01 Ra | 1 | 1 year |
Quality Reports
“The quality inspection report reflects the results of rigorous product testing, ensuring compliance with relevant quality standards and safety requirements.”



