Quality Assurance
Guarantee Quality for Terminals and Distribution Blocks
If your project demands stable electrical connections, consistent torque performance, and safe metering interfaces, you need components that don’t fail on site. Every Haiyan terminal block, distribution block, and metering assembly is injection-molded from high-strength PC or reinforced engineering plastics and undergoes 100% testing for continuity, torque, insulation resistance, and thermal stability.
For projects that demand documented reliability, we also supply complete test reports and support for third-party certifications—helping your engineering team approve designs faster and lower commissioning risks.
Reliable Performance from the Start
Incoming Material Inspection
HAIYAN carefully inspects all raw materials for chemical composition, mechanical durability, insulation integrity, and coating consistency. Full traceability and certification support ensure confidence from the very first step.
Chemical Composition Check(Copper / Tin / Alloy)
Insulation mechanical & pressure testing
Flame-retardant and temperature compliance
Anti-corrosion plating consistency
Traceable labeling and warehouse control
Precision Testing Equipment for Reliable Power Distribution Connection
We operate a fully equipped in-house laboratory to rigorously test every electrical connection component. Through current load, insulation, contact resistance, corrosion, and thermal cycle testing, we ensure your installations are safe, durable, and compliant with international standards.
Halogen Moisture Analyzer
Color Haze & Transmittance Meter
Melt Flow Index Tester
Vicat Softening Point & Heat Distortion Tester
Three-Element (Halogen/Cl/S/Br) Analyzer
Universal Tensile Testing
Machine
Optical/Video Measuring System
High-Current Thermal Rise
Trusted Certifications for Products and Factory
HAIYAN terminal blocks, junction boxes, and distribution blocks carry global certifications such as CE, CQC, and CB, enabling use worldwide. Backed by ISO9001, ISO14001, and ISO45001 factory certifications, we deliver safe, reliable, and environmentally responsible production for every project.
ISO 45001
ISO 45001
ISO 45001
China Compulsory Certification (CCC) Certificate
Rely on Our Certified
Junction Boxes and Terminal Blocks
Secure Your Circuits with Proven Technology