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Quality Control System

Our Quality Philosophy

Quality serves as the lifeline and core foundation of Ningbo Xiayi’s long-term development. As an enterprise certified by IATF 16949:2016 automotive quality standards, we have established a complete multi-level closed-loop quality control system covering raw material incoming, in-process manufacturing and finished product inspection. Our product defect rate is kept below 0.1%, and full batch traceability is available for all components, fully securing the stable and safe operation of vehicle suspension systems under diverse road conditions.

We regard quality as an inherent corporate habit rather than a temporary task. Supported by automated production lines, a professional testing laboratory and an experienced QC team, we set unified quality standards for our full product range including powder metallurgy parts, stamped components, piston rods, springs and self-developed automated assembly equipment. Meanwhile, we adhere to green manufacturing concepts, balancing strict quality control with low-carbon sustainable production and fulfilling corporate social responsibility.

Three-Level Hierarchical QC System

Incoming Raw Material Inspection

Before iron-copper-carbon alloy, alloy steel and other raw materials enter production, rigorous chemical composition and density analysis will be carried out to eliminate hidden quality risks at the source and block substandard materials from production lines.

In-Process Quality Control

Real-time monitoring runs through the whole manufacturing cycle. Key process indicators such as sintering temperature, compaction pressure and dimensional tolerance are tracked continuously to standardize every procedure including powder metallurgy forming, rubber coating, precision stamping and piston rod machining.

Finished Product Comprehensive Testing

Our in-house professional laboratory is equipped with a full suite of precision testing instruments: electronic density balances, Rockwell & Brinell hardness testers, surface roughness meters, metallographic microscopes and shock absorber performance simulation platforms. All mechanical and functional indicators of finished products are fully verified before delivery.

Five-Step Standardized Quality Assurance Procedure

Raw Powder Pre-Analysis

Real-Time On-Site Production Monitoring

Metallographic Microscopic Inspection

100% Full Inspection Before Shipment

Durability & Environmental Simulation Test

Green & Sustainable Supporting Mechanism

We implement eco-friendly low-carbon manufacturing: a waste heat recovery system is applied to sintering processes to cut energy consumption and carbon emissions significantly. All metal scraps and powder waste generated during production are recycled 100% for reprocessing. We achieve sustainable development while maintaining high-quality product output.

Commitment to Global Partners

Putting customers at the center of all operations, our rigorous quality system underpins the delivery of high-precision OEM shock absorber components and custom automated machinery, and ensures smoother, safer driving experiences for end users. We sincerely invite global partners to visit our Ningbo manufacturing base for factory audits, technical exchanges and win-win cooperation, to jointly shape a bright future for the shock absorber component industry.

Honors and Certificates

Ningbo XiaYi Electromechanical Tech Co., Ltd. has strong R&D capabilities in automotive shock absorber components and owns multiple patented technologies related to piston manufacturing, rubber coating processes, and automated production equipment.
The company has developed advanced manufacturing systems, including fully automatic rubber-coated piston production equipment, piston processing automatic feeding mechanisms, piston processing devices, and mixing equipment, improving production efficiency, product consistency, and manufacturing precision.
XiaYi has established an IATF 16949:2016 certified quality management system to ensure strict quality control throughout raw material inspection, precision machining, automated production, and final testing. By combining patented technologies with standardized automotive quality management, the company provides reliable shock absorber pistons, rubber-coated piston components, and customized OEM/ODM solutions for global automotive customers.