Author: cert-guide

What Does IP Protection Rating Mean?

When buying car chargers, outdoor charging cables, or portable power stations, you’ve most likely seen markings

How Long is the Validity Period of the UN38.3 Battery Transport Report?

Friends who do cross-border business with lithium battery-powered products have almost all encountered the situation where

What is the difference between RoHS testing and REACH testing

Friends who make products such as charging cables, USB-C chargers, and power adapters have most likely

What is ISO 17025, and is it mandatory for laboratories?

For friends in the cross-border charging product industry, whether you sell charging cables, chargers, or engage

Why Electronic Products Must Undergo EMC Testing

Have you ever encountered these situations: you plug a newly bought low-cost fast charger into the

What is the Difference Between IEC 62133 and UN38.3?

If you engage in cross-border sales or logistics of charging products, or simply purchase battery-powered charging

Is UN38.3 Mandatory for Power Banks Shipped by Air?

Whether you’re taking a power bank on a plane when studying abroad or traveling, sending power

Is USB-IF Certification Mandatory?

Many cross-border sellers who sell USB charging products, as well as ordinary overseas consumers, often encounter

How to Verify Suppliers’ Certification Documents

Friends who do cross-border procurement of charging products have most likely run into pitfalls with certifications:

Which Countries’ Certifications Can a CB Report Be Converted To?

Friends who run cross-border businesses for charging products or engage in overseas procurement have most likely

How Long Before Expiration Do Certification Certificates Need to Be Renewed?

For friends in the cross-border charging product business, when encountering certification renewal issues for the first

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