Quality Without Compromise
Where Precision Meets Reliability
At TENGJIN, quality is the foundation of everything we create. Our comprehensive quality management system ensures that every product we manufacture meets or exceeds the most demanding international standards and your specific requirements.
Quality Management System
Committed to excellence through systematic quality control and continuous improvement in alignment with international standards
Our Quality Approach
Our quality management system follows the principles of ISO 9001:2015 standards, implementing a process-based approach that emphasizes risk-based thinking and continuous improvement. We integrate quality assurance into every stage of production, from initial design through final delivery.
We maintain comprehensive quality control procedures aligned with international manufacturing standards, ensuring consistent product quality and customer satisfaction.
Prevention Over Detection
We implement proactive quality measures through comprehensive planning, engineering analysis, and process validation to prevent defects before they occur.
Data-Driven Decisions
Our processes are guided by statistical analysis and real-time monitoring systems to maintain consistent quality standards and optimize production efficiency.
Continuous Improvement
Through systematic evaluation and optimization of our processes, we constantly enhance our capabilities and efficiency to deliver superior results.
Total Quality Responsibility
Every team member is thoroughly trained and empowered to take ownership of quality at each stage of production.
Quality Assurance System
With 20 years of manufacturing expertise, our rigorous quality control processes ensure every product delivers premium performance, perfect precision, and exceptional reliability.
Our Quality Commitment
At TENGJIN MFG, quality isn't just a checkpoint—it's ingrained in our DNA. Every process, decision, and interaction is governed by our commitment to excellence, developed over two decades of precision manufacturing experience.
Zero-Defect Mindset
Our proactive quality approach focuses on prevention rather than correction, eliminating defects before they occur.
Customer-Centric Standards
We customize our quality protocols for each industry and application, ensuring your specific requirements drive our process.
Continuous Improvement
Our data-driven approach continuously optimizes quality processes, ensuring we stay at the forefront of manufacturing excellence.
Certifications & Global Standards
We validate our commitment through rigorous international certifications, ensuring your products meet or exceed industry requirements anywhere in the world.
Material Compliance & Testing
RoHS 2.0 Compliant
All materials meet EU restrictions on hazardous substances with full documentation
REACH Certified
Ensuring safe chemical use with full regulatory compliance for human health protection
FDA Food Grade
Certified for direct food contact with complete traceability and safety documentation
UL Certified
Products approved for electrical applications with comprehensive safety compliance
Industry-Specific Excellence
We implement tailored quality standards for each industry we serve, ensuring every product meets or exceeds the specific requirements of your application and market.
ISO 9001:2015 Framework
Our quality management system is built on ISO principles, ensuring consistent product and service excellence with documented procedures and continuous improvement.
Automotive: IATF 16949
For automotive applications, we implement stringent controls from IATF standards for defect prevention, waste reduction, and part-to-part consistency critical for vehicle components.
Electronics: ANSI/ESD S20.20
Our electronics manufacturing environment maintains stringent electrostatic discharge protection protocols, safeguarding sensitive components throughout the production process.
Medical: ISO 13485
For medical device components, we implement controls based on ISO 13485 principles, ensuring regulatory compliance, traceability, and consistent quality for patient safety.
Outdoor Products: IPX Testing
Our outdoor product components undergo rigorous water resistance and environmental testing, ensuring durability and performance in challenging conditions.
Custom Quality Protocols
Beyond standard certifications, we develop and implement custom quality protocols tailored to your unique product requirements, ensuring optimal performance in your specific application.
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Our Quality Control Process
At TENGJIN MFG, we implement a comprehensive quality management system ensuring precision, consistency and reliability in every product we manufacture.
Design & Planning
Production Setup
Process Monitoring
Comprehensive Testing
Quality Planning
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Quality Planning
Detailed quality control plans for each project with clear acceptance criteria.
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FMEA Analysis
Failure Mode and Effects Analysis to identify and address potential quality risks.
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Process Mapping
Detailed workflow analysis to identify critical control points.
Advanced Quality Testing Equipment
Our state-of-the-art testing equipment ensures every product meets the highest quality standards through precise measurement and comprehensive material testing.
Precision Measurement Equipment
Coordinate Measuring Machine (CMM)
Zeiss CONTURA high-precision measurement system with 0.001mm accuracy for complex geometric shape measurement.
Optical Measurement System
Keyence IM series image dimension measurement system providing non-contact high-precision measurement for small precision parts.
Laser Scanner
Rapid 3D digital model creation for products, comparing with CAD data to verify dimensional accuracy.
2D Profile Projector
Optical projection system for precise measurement of product profiles and critical dimensions.
Material Testing Equipment
Tensile/Compression Testing Machine
Measures mechanical strength and durability of materials and products under various load conditions.
Hardness Tester
Measures material hardness to ensure compliance with specification requirements and quality standards.
Spectral Analyzer
Verifies chemical composition of plastic and rubber materials to ensure material compliance and quality.
Aging Test Chamber
Simulates long-term usage under various environmental conditions to test product durability and lifespan.
Explore More About TENGJIN
Discover how our comprehensive manufacturing solutions and proven expertise can transform your product vision into reality
Ready to Transform Your Ideas into Reality?
With 20 years of precision manufacturing expertise, TENGJIN MFG is your trusted partner for custom injection molding solutions. Let's discuss how we can bring your vision to life with uncompromising quality and efficiency.
Our Quality Assurance Commitment
Transparent Quality Communication
We provide complete access to quality data and real-time project updates.
24-Hour Response Guarantee
Quality issues receive 24-hour response, ensuring rapid resolution.