Green Indoors
We collaborate with you to achieve your business, ESG and production goals
GRST's team combines engineers, scientists, and technology entrepreneurs who share a common passion to help you move towards net-zero emission more effectively
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Green, Renewable, Sustainable Technology (GRST)

The first and only company to develop and license an eco-friendly water-based electrode production and recycling technology, GRST makes high performance lithium-ion battery production and recycling on a commercial scale possible for all existing chemistries and end-uses. 

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Our Team

Yeung Sau Hung (Alex)
30+ years of financial services experience. Currently an independent non-executive director of Geely Automobile Holdings and the CEO of Diamond Head Capital Asset Management. Previous CEO of DBS Vickers (Hong Kong), head of Greater China Equities and MD of Deutsche Securities, and head of non-Japan Asian equities for Swiss Bank Corporation.
Hung Yuen (Justin)
Chief Executive Officer & Founder
20+ years management experience in technology companies in electrical and chemical fields in China and Korea. Founder of several innovative eco-friendly technology businesses, including CeraSOL Holdings and Heat2wear Company.
Wong Sing Hung (Eric)
40+ years of trendsetting entrepreneurial experiences.  Co-founder of Fotomax, a pioneer one-hour photo finishing company in Hong Kong, and System-Pro, which successfully introduced IBM micro-computers and software solutions to the local market.
Lo Chi Tak (Lewis)
President, Business & Marketing
30+ years of project development experiences in semi-conductor industry. Co-founder of a semiconductor  solutions provider which was listed on the Taiwan Stock Exchange in 2010, named as GMI Technology Inc. Also, Co-founder of Vision Technology, a leading computer & electronics products distributor in Hong Kong & China.
Dr. HO Kam Piu (Bill)
Chief Scientific Officer & Founder
20+ years’ research experience in electrochemistry and green chemistry. 90+ granted patents. Extensive technical management experience to undertake battery-related research projects in both HKSAR and China. Ph.D. in Chemistry (HK PolyU) and Postdoctoral studies in material science (McGill University).
JIANG Yingkai (Kevin)
Chief Technology Officer
13+ years’ research and production experience in the lithium-ion battery industry. Specialization in advanced cell design, process development and production. Previously worked for ATL (predecessor of CATL), Hong Kong ASTRI and NAMI. M.Eng. in Applied Chemistry (Shenzhen University).
Dr. LAW Man Chun (Joe)
Chief Legal Officer
10+ years career as a senior patent attorney, specialization in IP strategic planning and enforcement of patent rights. Previously worked for international law firm Squire Patton Boggs. Vice-Chairman of Hong Kong Chinese Patent Attorneys Association and a Council member of the Hong Kong Institute of Patent Attorney. M.Phil. in Green Chemistry (McGill University) and Ph.D. in Chemistry (HK PolyU).
WANG Ranshi (Rock)
Director, Product Development
15+ years’ experience in developing inspection modules for automation system and in-depth knowledge in advanced material analysis. Specialization in analyzing battery cell products' technical needs from applications. Previously worked for ASM Assembly Automation Limited in designing advanced vision systems, and NAMI to lead lithium-ion battery research. M.Phil. in Physics (CUHK).
Andrew Sum
Chief Marketing Officer
20+ years in sales and business management for banks such as Lloyds Bank, Coutts, Barclays. Last position as Managing Director, Head of Private Banking at Barclays Asia Pacific.
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Frank Harley
Chief Financial Officer
22+ years private equity investing focused on cleantech, wellness, and mobility AIF Capital (Hong Kong, India), Newport Concept Corp (Canada), Sharakoo Group (SE Asia). CFA. MSc Transportation & Logistics, BCom International Business, UBC, Canada.
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Our Locations

GRST Holdings Limited (Headquarters)

Unit 1222, 12/F, Building 19W, 19 Science Park West Avenue, Hong Kong Science Park, New Territories, Hong Kong

Shunde R&D Center

Xinhui Road, Wusha Industrial Zone, Shunde District, Foshan City, Guangdong Province, China

Shunde Polymer Center

Ke Yuan San Street, Shunde District, Foshan City, Guangdong Province, China