Editor's note: In this series, Greener Visions, China Daily delves into the research, development and implementation of cutting-edge carbon technologies in the Guangdong-Hong Kong-Macao Greater Bay Area, aiming to cut emissions and achieve carbon neutrality.

Every action leaves a mark, and for decades, human activities have etched a growing carbon footprint into the planet. But what if that footprint could be transformed into something constructive?

Hong Kong startup CS Tech Solution is turning this vision into reality by converting carbon dioxide, a harmful greenhouse gas, into a revolutionary building material. Their innovative eco-bricks are not just reducing emissions, but also paving the way for a greener, more sustainable future.

In their factory nestled near picturesque Lung Kwu Tan in Hong Kong's New Territories, rows of neatly arranged bricks sit on steel shelves inside a tin cabinet. As the cabinet door is closed, a faint sizzling sound fills the air as gas is pumped through pipes into the sealed space.