Certificates, Patents and Test Reports | ZWILLIS

Honours & Certifications

Certified systems, patented designs, independently tested products.

Every document on this page is issued to Zhongwei Willis (Shanghai) Electric Technology Co., Ltd. — management system certification, CE attestations for our oil-immersed and dry-type transformer series, invention patents, and type test reports from independent testing laboratories. Select any certificate to view it full size.

3ISO management systems
8Invention patents
2CE attestations
17Test reports & product certificates

Management Systems

Honours

CE Marking

Invention Patents

Testing & Product Certification

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