Power Bank Export: How to Detect Capacity Fraud and Verify UN38.3 Transport Reports
You ordered 5,000 units of a 20,000mAh power bank from a Chinese supplier. The samples passed. The p...
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Industrial Motors: Insulation Class Checks, Vibration Testing, and Full-Load Temperature Rise
When you order industrial motors from a Chinese manufacturer, three invisible failure modes decide w...
Heatsinks & Fans: Thermal Imaging Efficiency Tests and Bearing Noise Inspection
Thermal management components fail quietly. A heatsink with a warped base or a fin array that was st...
Electronic Switches: Mechanical Lifecycle Testing and Actuation Force Inspection
A faulty switch rarely announces itself during production. It announces itself six weeks later — whe...
Semiconductors & Chips: How to Identify Refurbished or Counterfeit Components
A counterfeit integrated circuit does not announce itself. It arrives in branded packaging, with a p...
Electronic Transformers: Inductance Testing, Dielectric Strength, and Temperature Rise under Load
A transformer that meets its rated specifications at room temperature with no load is not the same t...
