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HUANG CHANG Certifications, Trademarks & Product Documentation

Yiou Tools is the trading name and online store operated by HK YIOU TECHNOLOGY GROUP LIMITED.

Registered office:
Room 602, 6/F, Kai Yue Commercial Building
No. 2C Argyle Street
Mong Kok, Kowloon
Hong Kong

EU fulfillment and approved-returns logistics location:
ul. Dębowa 10, 55-040 Tyniec Mały, Wrocław, Poland
This location is used for EU logistics and approved returns and is not the company’s registered office.

Customer service: support@yioutools.com · +48 698 902 289

HUANG CHANG is a registered product trademark used on selected products sold through Yiou Tools. Yiou Tools is operated by HK YIOU TECHNOLOGY GROUP LIMITED. Explore the exact entities, document numbers, product or model scope, and dates shown on each owner-supplied source document.

EUIPO registration record for HUANG CHANG word trade mark 019107261
EUIPO record for the HUANG CHANG word mark, No. 019107261.

EU Trade Mark 019107261 — Word Mark

Document type
European Union Trade Mark — Word mark “HUANG CHANG”
Entity
Registered owner: QUANZHOU LUOJUN Investment Co., Ltd.
Scope / Model
Nice Classes 3, 7 and 8
Date
Filed 15 November 2024; registered 5 March 2025
Download complete EUIPO record (PDF)
EUIPO registration record for HUANG CHANG figurative trade mark 019107262
EUIPO record for the HUANG CHANG figurative mark, No. 019107262.

EU Trade Mark 019107262 — Figurative Mark

Document type
European Union Trade Mark — Figurative mark
Entity
Registered owner: QUANZHOU LUOJUN Investment Co., Ltd.
Scope / Model
Nice Classes 3, 7 and 8
Date
Filed 15 November 2024; registered 5 March 2025
Download complete EUIPO record (PDF)
ISO 9001:2015 document for HUANGCHANG DIAMOND TOOLS PLANT, registration 545022M10300W0
Owner-supplied ISO 9001:2015 document, registration 545022M10300W0.

ISO 9001:2015 Document

Document type
Owner-supplied ISO 9001:2015 document
Entity
Certificate holder: HUANGCHANG DIAMOND TOOLS PLANT; issuer shown: Kaixin Certification (Beijing) Co., Ltd.
Scope / Model
Manufacture and Service of Diamond Cutting Tools and Grinding Wheel
Date
Issued 13 March 2024; printed validity date 12 March 2027

Complete PDF was not provided in the approved source package; the document image is shown above.

UDEM concrete floor grinder attestation document M.2024.206.C69192
Owner-supplied UDEM attestation for the specified concrete floor grinder models.

UDEM Concrete Floor Grinder Attestation

Document type
Attestation certificate referencing Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU
Entity
Huang Chang Diamond Tools Co., Ltd.
Scope / Model
Concrete Floor Grinder models HC-CGP-0077, HC-CGP-0064, HC-CGP-0058, HC-CGP-0013 and HC-CGP-0008
Date
Registered 9 June 2024; printed expiry date 9 June 2029

Complete PDF was not provided in the approved source package; the document image is shown above.

Voluntary conformity attestation CE-5366-020626 for WS-6 handheld pneumatic wet sander
Owner-supplied voluntary conformity attestation for model WS-6.

WS-6 Voluntary Conformity Attestation

Document type
Voluntary Conformity Attestation — not a Notified Body conformity assessment
Entity
Holder: Huian Huangchang Diamond Tools Co., Ltd.; manufacturer: Danyang Fulaite Tool Manufacturing Co., Ltd.
Scope / Model
WS-6 Handheld Pneumatic Wet Sander; test report shown: MD-TCF-260520-87780
Date
Issued 2 June 2026; printed expiry date 2 June 2031
Download complete attestation (PDF)

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Official registry references

Record Official source Recorded scope
EU trade mark No. 019107261 EUIPO eSearch HUANG CHANG word mark; registered owner: QUANZHOU LUOJUN Investment Co., Ltd.; Nice Classes 3, 7 and 8.
EU trade mark No. 019107262 EUIPO eSearch Figurative mark; registered owner: QUANZHOU LUOJUN Investment Co., Ltd.; Nice Classes 3, 7 and 8.

Other documents on this page are presented according to the document itself. Their inclusion does not state that a specific certificate or attestation has been independently verified online unless the page expressly says so.

Last reviewed: 18 August 2026. See the Diamond Tool Guides for product-selection context.