About | GreenWalls Group

Our History

Established in 1998, GreenWalls Group Limited is a Hong Kong-based corporation at the forefront of Bioengineering and Nanoengineering technologies. For over two decades, we have pioneered innovative solutions in landscape, waterproofing, maintenance projects, and more recently, solar panel applications. The Group comprises four specialized divisions or subsidiaries: Green-Tech, Nano-Tech, Bio-Tech, and Solar-Tech, each offering unique systems and products.

Building on our considerable success in Hong Kong, we are poised to expand our footprint both locally and internationally. Our strategic focus includes growth in the mainland China market, as well as targeting key markets such as Australia and Canada.

Our Vision

Greening cities sustainably, creating resilient environments for all.

Our Mission

We revolutionize green urban living with technology. We advance sustainable practices, drive innovation, and deliver solutions that support the construction of green infrastructure and landscape, embracing the principles of Environmental, Social, and Governance (ESG) responsibility.

Our Leadership

William Auyeung

Chief Executive Officer

William is a Professional Structural, Geotechnical Engineer, and Greening specialist. Since 2000, he has been responsible for designing, researching, and reviewing bioengineering greening systems for man-made slopes and nano-structured coating systems for the company. William boasts extensive design and construction experience in major foundation rehabilitation and earthquake upgrading projects for bridges, hydro-dams, and infrastructures in Canada, USA, and Central America. His expertise combines ground engineering know-how and research experience in greening technology, leading to the development of various greening systems adopted by the Hong Kong Government for its continuous greening development program. Additionally, William has developed nano-structured coating technologies widely applied in Hong Kong. He is actively involved in the production and marketing development of organic technologies, applying bio-engineering technologies for environmental protection development projects in Asia. William has served as a technical member in the Micro-piling committee of the Deep Foundation Institute, USA, and has been a project manager for major international construction and design projects worldwide. Currently, he serves as the CEO of an organic production incorporation and a Foundation Engineering Construction company in Canada.

About Me

Brian Cheng

Chief Operating Officer

Brian Cheng, B.Eng (Civil), MCIHort, is the COO and Managing Director of the Group. Since 2000, he has been responsible for designing, researching, and implementing innovative bioengineered greening systems and nano-structured coating systems for the company. Prior to founding GreenWalls, Brian amassed over 30 years of geotechnical and civil construction experience as an engineer specializing in drilling, micro-tunneling, grouting, concrete repair, and waterproofing. He served as an engineering director directly involved in major slope stabilization, soil nailing, ground settlement, ground investigation & instrumentation, and foundation works for LPM projects in Hong Kong. Brian has also been involved in numerous basement and tunneling waterproofing projects in the region. With his extensive background in ground engineering and research in green technologies, Brian has developed various greening systems and nano-structured coating systems adopted by architects, developers, property management companies, and government departments in Hong Kong. He is a pioneer in greening development and has also contributed to the development and application of geothermal technologies for Wetlands Parks in Hong Kong, promoting global energy-saving initiatives through zero-carbon emission heat exchange systems. Additionally, Brian serves as an executive director of Nano-coatings, Greening & Bio-technology incorporations in Hong Kong and Canada.

About Me

Our Company Structure

GreenWalls Group Limited has reorganized and now consists of several subsidiaries and divisions, each specializing in different aspects of

Green-Tech, Nano-Tech, Bio-Tech, and Solar-Tech:

GreenWalls Bioengineering

(HK) Ltd.

綠牆工程(香港)有限公司

GREEN TECH

Specializes in Vertical Green, Roof Green, Slope Green, and Landscaping solutions.
Holds various registration certificates, including:
- Registered General Building Contractors
- Registered Minor Works Contractors (Company)
- EPD On-list IAQ-Contractor
- CIC Registered Subcontractors
- Approved Suppliers of Materials and Specialist Contractors for Public Works

CanaShield

Nano-Technologies Ltd.

綠牆納米科技有限公司

NANO TECH

Focuses on NanoTech Products & Services, including:
CanSEALER-STS (Product Code: CS1-STS) – Deep Penetrative Crystalline Concrete Preservation & Waterproofing Sealer, with CIC Green Product Certification
SolarIAQ – Semi-Penetrative Air-Purification and Self-Cleansing Coating for Concrete and Glass
CanNTFIRE-KFW (Product Code: CS11-KFW) – Wood & Fabric Preservation & Fire-Retardant Sealer