China Carbon Neutral Development Group Limited, an investment holding company, engages in the civil engineering and construction business in Hong Kong, Macau, Mainland China, and Singapore. The company operates through Global Carbon Neutral, Civil Engineering and Construction, and Green Credit Digital Technology segments. The Global Carbon Neutral segment engages in trading of carbon credit and carbon asset development; management and investment in carbon neutral related fields, and carbon consulting and planning services. This segment develops utilization and storage of natural carbons, and carbon capture related process. The Civil Engineering and Construction segment engages in civil engineering, construction, and maintenance of buildings. The Green Credit Digital Technology segment offers ESG analysis reports and provides financing for green credit digital technology. It is also involved in the provision of civil engineering, and building construction and maintenance works to government, public utilities companies, and private organizations. In addition, the company engages in the development, operation, management, and sale of carbon credit assets; provision of carbon neutral advisory services. China Carbon Neutral Development Group Limited was formerly known as Bisu Technology Group International Limited and changed its name to China Carbon Neutral Development Group Limited in April 2021. The company was incorporated in 2012 and is headquartered in Wong Chuk Hang, Hong Kong.