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Hong Kong Top Brands



Time of Establishment



RHT Industries Limited

Award (Year)

Hong Kong Emerging Brand (2019), Hong Kong Top Brand (2022)

Main Product(s)

Household Air Purifier, Filter

"Top Mark" Registered Categories

Household Air Purifier, Filter


Units 208-209, Wireless Centre, 3 Science Park East Avenue, Hong Kong Science Park, Sha Tin, New Territories, Hong Kong

Tel No.

2417 0075



Wits for Win

Clean air starts here! b-MOLA uses patented technology to kill bacteria, viruses and remove volatile organic compounds, protecting your every breath.

Company Profile

b-MOLA is a brand under RHT Industries, which specialises in household air purifiers, ranking among the top three in Hong Kong in terms of market share. RHT Industries has its own production plant, strictly controls product quality, and provides comprehensive after-sales services such as maintenance and repair; its strong R&D team, composed of scientists and researchers from world-leading universities and research institutions, has achieved fruitful results in the development and applications of innovative technologies.

Track of Glory

b-MOLA applies Nano Confined Catalytic Oxidation (NCCO) system, which is a patented technology developed by RHT Industries in partnership with some members of the HKUST Entrepreneurship Programme. The major advantage of NCCO lies in its ability to decompose pollutants into water molecules and carbon dioxide; and major problems commonly faced by other air purification technology could also be overcome, such as the needs for regularly changing filter after it has been rendered non-functional due to saturation. NCCO filter system effectively absorbs and decomposes air pollutants whilst continuously purifying, such that purification efficiency is elevated and product life cycle could be extended.

NCCO technology has been proven to effectively eliminate viruses, bacteria, and volatile organic compounds such as formaldehyde, toluene, xylene, and acetone. b-MOLA air purifier has passed the tests of China Quality Certification Centre, and has obtained certifications of the British Allergy Association, the EU "CE", Intertek's "ETL" and the US "FDA". Products are widely adopted by more than 300 medical institutions and large enterprises around the world, including HSBC, Hong Kong International Airport and Hong Kong Railway.

b-MOLA has been increasingly recognised for its innovative technology and product design. It was honoured with "2022 Hong Kong Top Brand" by Hong Kong Brand Development Council and its product model "BM100" was conferred "The Twelfth Creative China National Design Art Awards".