Quality Control System

Ensuring precision, consistency, and compliance at every stage of production

Ningbo Hiyet Metal Products Co., Ltd. implements a comprehensive quality management system certified to ISO 9001:2015. Our quality assurance covers raw material verification, in-process inspection, and final product validation, ensuring every component meets international standards and customer specifications.

International Certifications

Proof of our commitment to global quality and environmental standards

ISO 9001:2015

Quality Management System for consistent product quality and continuous improvement.

CE Marking

Compliance with European health, safety, and environmental protection standards.

RoHS Compliant

Restriction of Hazardous Substances in electrical and electronic equipment.

SGS Audited

Third-party inspection and certification for factory capability and product safety.

Quality Inspection Stages

Multi-point verification throughout the manufacturing process

Raw Material Inspection

Chemical composition analysis (spectrometer), mechanical property testing, and supplier certification verification before use.

In-Process Quality Control

Dimensional checks during CNC machining, die casting parameter monitoring, and surface defect screening.

Final Product Testing

100% visual inspection, CMM (Coordinate Measuring Machine) for critical dimensions, X-ray for internal porosity, and salt spray testing for coating durability.

Documentation & Traceability

Full batch traceability with inspection reports, material certificates, and test records archived for 5+ years.