YiouTools is the online store operated by HK YIOU TECHNOLOGY GROUP LIMITED. HUANG CHANG is the European commercial brand used by YiouTools for its diamond-tool product range. We support professional buyers with clear product information, practical compatibility guidance and dependable order fulfilment.
Who We Serve
Our customers include professional stone workshops, tile installers, floor preparation contractors, construction professionals, tool dealers, distributors, B2B trade buyers and experienced end users. Whether the requirement is a single replacement tool or a trade enquiry covering several product types, our aim is to help buyers identify suitable options and check compatibility before ordering.
Product Range
Our current active catalogue includes diamond cutting blades, diamond drilling tools, diamond polishing pads, diamond grinding tools, and concrete and floor preparation tools. Availability changes by product and market, so the relevant product page and checkout remain the current sources for selectable options, price, stock and delivery availability.
EU Fulfilment
Eligible orders may be fulfilled from our EU warehouse in Poland. DHL tracked delivery is available to supported European destinations. Availability and shipping costs are shown at checkout.
Product Information and Compatibility
Tool fit matters. Product pages are intended to present the available dimensions, connection or bore information, suitable application materials, and wet or dry use where those details apply. Buyers should compare the listed product information with their machine, material and intended task. If compatibility is unclear, contact us before placing the order and include the machine model, connection details and application.
Customer Support
Our primary written support channel is support@yioutools.com. WhatsApp at +48 698 902 289 is available as a supplementary contact channel. Our business hours are Monday–Friday, 07:30–18:00 CET/CEST.
We offer a 30-day commercial return window subject to our Returns Policy. Eligible EU consumers also retain their statutory 14-day right of withdrawal where applicable. The applicable conditions and return instructions are set out in the published policy.
Company Information
Legal operator and company contact address
HK YIOU TECHNOLOGY GROUP LIMITED
Room 602, 6/F, Kai Yu Commercial Building
2C Argyle Street
Mong Kok, Kowloon
Hong Kong
EU warehouse, dispatch and returns address
ul. Dębowa 10
55-040 Tyniec Mały
Wrocław
Poland
The Hong Kong address is the registered company and company contact address. The Poland address is used for EU warehousing, dispatch and approved returns; it is not the registered office of HK YIOU TECHNOLOGY GROUP LIMITED.
