1. Type of Certification:
The CE marking is a mandatory requirement for products entering the European Economic Area (EEA). However, CE certification itself includes several conformity assessment routes. For low-risk products such as those under Electromagnetic Compatibility (EMC) regulations, EU law allows manufacturers to adopt a “self-declaration” approach. This means the manufacturer conducts its own conformity assessment and signs the EU Declaration of Conformity.
2. Conclusion:
This certificate is a “Certificate of Conformity” issued by a third-party organization. It enhances the product’s credibility, but legally, the entity responsible for placing the product on the EU market remains the manufacturer. EU customs and market surveillance authorities recognize the EU Declaration of Conformity issued by the manufacturer and the supporting technical documentation — not necessarily a third-party certificate.
3. Analysis of the Issuing Body:
The certificate lists the issuing organization as “XK”, namely Shenzhen Xunke Standard Technical Service Co., Ltd. This is a Chinese third-party testing and certification body.
4. Authority and Positioning:
XK is a legally registered testing organization filed with the Certification and Accreditation Administration of the People's Republic of China (CNCA), possessing the necessary testing competence and qualifications. In China, it is a legitimate commercial testing company.
In contrast, EU Notified Bodies have unique four-digit identification numbers (e.g., 0123). Certificates issued by Notified Bodies — particularly for high-risk products — hold the highest level of legal authority.
5. Analysis of Testing Standards:
The certificate references authoritative testing standards:
EN IEC 61000-6-1:2019 — Immunity standard for residential, commercial, and light-industrial environments.
EN IEC 61000-6-3:2021 — Emission standard for residential, commercial, and light-industrial environments.
EN 61000-3-2:2019 — Limits for harmonic current emissions.
EN 61000-3-3:2019 — Limits for voltage fluctuations and flicker.
All these standards are current harmonized standards published in the Official Journal of the European Union (OJEU). Testing based on these standards indicates that the product’s EMC performance meets EU regulatory requirements.
6. Product and Applicant Information:
Applicant/Manufacturer: ONESUN Technology and ONESUN Green Energy. The certificate clearly identifies the responsible party for the product.
Product Models: A wide range of lithium battery pack models are listed.
