Top-rated Product Inspection & Quality Control Company in China
17+ years of independent, hands-on product inspection experience on factory floors — not in any office. Pre-shipment inspections, factory audits, supplier assessments, and lab testing — done with integrity, delivered with speed. The third-party quality control company — China Quality Service — now trusted by 500+ clients
On-the-ground Quality Control Services
End-to-end product inspection service in China covering the entire manufacturing cycle
Product Inspection
Providing initial production inspection, during production inspection, pre-shipment inspection, full inspection and container loading supervision services to ensure products meet specifications and quality standards. Covering electronics, textiles, machinery, toys and more.
Factory Audit
Conducting comprehensive quality management system audits, social responsibility audits and production capacity assessments on supplier factories in China, helping you mitigate manufacturing risks before placement.
Laboratory Testing
Partnering with CNAS-accredited laboratories to provide physical performance testing, chemical composition analysis, safety performance testing and other professional testing services, ensuring products comply with target market regulatory requirements.
Supplier Management
Helping enterprises establish comprehensive supplier assessment and management systems, from screening and auditing to continuous improvement, mitigating procurement risks.
Technical Consulting
Providing professional consulting services including product standard interpretation, technical specification development, and quality system establishment to help enterprises enhance quality management.
International Compliance
Helping enterprises understand and meet regulatory requirements of international markets such as EU CE, US FDA, RoHS, REACH, facilitating smooth entry into global markets.
China Quality Service — Factory-Floor Quality Controller in China
At China Quality Service, on mission to be the boots-on-the-ground third-party inspection company — not a checklist — delivering tailored quality solutions and unvarnished product truth across China and Asia. Executing from pre-shipment inspection to supplier development with one simple goal: protect your brand, your supply chain, and save you from costly surprises.
- 17+ years of industry expertise, covering 50+ countries and regions
- Professional inspection team with rigorous technical training system
- Strategic partnership with CNAS-accredited laboratories
- Rapid response, inspection tasks arranged within 24 hours
Built for the Factory Floor — Product Inspection Services in China
Trusted by 500+ global clients for third-party inspection and supply chain quality management across China
Professional Inspection Team
Our inspectors undergo rigorous pre-job training and assessment, possessing rich industry experience and professional technical knowledge to accurately identify product defects and quality issues.
Extensive Inspection Network
We have service points in major manufacturing bases across China, enabling rapid response to customer needs and arranging inspection tasks in the shortest time.
Standardized Inspection Process
Adopting internationally recognized AQL sampling standards, combined with client product characteristics to develop detailed inspection plans, ensuring every inspection is standardized, starting from $179/man-day.
Global Compliance Knowledge
In-depth understanding of market access requirements across countries, helping enterprises ensure products meet safety, environmental and quality standards of target markets.
What Our Clients Say
Don't just take our word — hear from the brands we've helped with 17+ years of QC expertise across 50+ countries.
"CNQ caught a critical defect that our factory missed. Saved us over $50,000 in potential recalls."
— Sourcing Manager, Leading US Retail Chain
"The inspection report was detailed and addressed within 24 hours. CNQ is now our go-to QC partner in Asia."
— QA Director, European Home Goods Brand
"We've used CNQ for over 5 years across 200+ inspections. Consistency and integrity — every single time."
— VP of Operations, Australian Electronics Importer
"Their factory audit revealed issues we never would have found on our own. Highly recommended."
— Procurement Lead, UK-based Home & Living Brand
Benefits from CNQ Insights
Expert QC Insights: Real-world inspection cases, industry analysis, and supply chain intelligence.
Card Printing Factory in Jinhua, Zhejiang
On-site factory audit of a greeting card & paper bag printing facility in Jinhua, Zhejiang. Commissioned by a European private-label importer to verify compliance and production quality.
Sharp Exposed Metal Edge — Garden Metal Shed
A sharp exposed metal edge found on a garden shed during product inspection. The factory's design team had never noticed it in years — until our inspector pointed it out.
ANSI/ASQ Z1.4 (ISO 2859-1) AQL Sampling Inspection Practical Guide
A deep dive into how AQL sampling standards apply across product categories — from General I/II/III level selection to Special level use cases on the factory floor.
Hassle-Free Open Resources From CNQ
Plan your sampling, estimate costs, and learn how a third-party inspection company protects product quality in China
AQL Sampling Calculator
Calculate AQL sample sizes in one click — based on ANSI/ASQ Z1.4. Know exactly how many units to inspect.
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Inspection Man-Day Estimator
Estimate inspection man-days and cost by product category, item count & AQL level. Starting from $179/man-day.
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Pre-Shipment Inspection Process
Understand the step-by-step process a third-party inspection company follows to inspect products in China.
Learn More →Your Product Quality, Secured
From single third-party product inspection to full-scale factory quality management system, CNQ experts provide tailored, reliable solutions to secure your supply chain - Starting from $179/man-day.
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