Our History
GreenWalls Group Limited, established in Hong Kong in 1998, is an internationally recognized, award-winning, innovation-driven Green Engineering Technology Company, Integrated Green Infrastructure Solution Provider, and Design-Build Contractor developing proprietary technologies for climate-resilient infrastructure. For over 25 years, we have integrated Bioengineering, Nanoengineering, Civil Engineering, Green Building Technologies, Solar Energy, and AloT to deliver high-performance solutions that accelerate the global transition toward Net-Zero cities. Through our GreenTech, NanoTech, BioTech, and SolarTech divisions, we have pioneered proprietary technologies, including NCPP® and Bioengineered Greening Systems, for urban greening, ecological restoration, structural protection, nano-waterproofing, AIPV, and intelligent environmental monitoring. Recognized, accredited, and entrusted by Hong Kong Government authorities, our award-winning projects reflect engineering excellence and innovation. Expanding across Hong Kong, Mainland China, Australia, and Canada, GreenWalls is redefining sustainable urban living through next-generation green engineering technologies.
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 Founder & Leadership
William Auyeung
Chief Executive Officer
William Auyeung (歐陽錦源), P.Eng
He is a professional Geotechnical and Structural Engineer with over 40 years of experience in foundation engineering design, construction, and infrastructure rehabilitation in Canada and internationally. His expertise includes seismic retrofit of hydroelectric dams and major infrastructure, FRP strengthening, large-bundle strand anchors, micropiles, compaction and permeation grouting.
He is also a founding member of the International Society for Micropiles, USA and has extensive experience in innovative and sustainable engineering solutions.
Brian Cheng
Chief Operating Officer
Brian Cheng (鄭良仁), BSc (Civil) & C. Horticulturist LANGUAGE, REGISTRATION & ENQUIRIES
He is an engineering professional with 47 years of experience in geotechnical and civil construction, covering foundation works, ground engineering, infrastructure rehabilitation, and bioengineered greening applications. Since 2000, he has served as Director of GreenWalls Group Limited, leading the design, R&D, and implementation of innovative greening systems, Mi-
landscape and AIPV green energy technologies, and nano-structured coating applications and solutions.
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
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Specializes in Vertical Green, Roof Green, Slope Green, and Landscaping solutions.
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Holds various registration certificates, including:
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Registered General Building Contractors
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Registered Minor Works Contractors (Company)
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EPD On-list IAQ-Contractor
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CIC Registered Subcontractors
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Approved Suppliers of Materials and Specialist Contractors for Public Works
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CanaShield
Nano-Technologies Ltd.
綠牆納米科技有限公司
NANO TECH
- Focuses on NanoTech Products & Services, including:
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CanSEALER-STS (Product Code: CS1-STS) – Deep Penetrative Crystalline Concrete Preservation & Waterproofing Sealer, with CIC Green Product Certification
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SolarIAQ – Semi-Penetrative Air-Purification and Self-Cleansing Coating for Concrete and Glass
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CanNTFIRE-KFW (Product Code: CS11-KFW) – Wood & Fabric Preservation & Fire-Retardant Sealer
