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Certificates & Documents

Verified credentials and downloadable documents for your purchasing reference

🧠 Patents

Proprietary technology protected by 4 international patents

IMG_5304.HEIC

A Robot Joint Bearing Reducer

Pattern No.  ZL2015 2 0557374.3

IMG_5305.HEIC

A Reduction Mechanism Applied to Robot Joint Bearing Reducers

Pattern No.  :ZL 2015 2 0552305.3

IMG_5308.HEIC

A Housing Structure for Robot Joint Bearing Reducers

Pattern No.  ZL 2015 2 0557266.6

IMG_5340.heic

A Transmission Mechanism Applied to Robot Joint Bearing Reducers

Pattern No.  ZL 2015 2 0552543.4

🏭 Factory Audit Report

Third-party verified production capability and quality management

Xnip2026-04-21_20-16-33.jpg

Factory Audit Report

Verified by TÜV 

Production facility inspection covering: workshop size, equipment list, annual capacity, quality control process, employee count, and management system.

📋 Additional Documents

More resources for your purchasing evaluation

Product Category

Product Catalog

Full product specifications, wire diameter range, axes configuration, and pricing guidelines

Ласкаво просимо до DONGZHENG

І ПРИГОТУЙТЕ ВАШІ ЗРАЗКИ

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