China Carbon Neutral Development Group Limited, an investment holding company, engages in the civil engineering and construction business in Hong Kong, Mainland China, Macau, and Singapore. The company is involved in the provision of civil engineering, and building construction and maintenance works to government, public utilities companies, and private organizations. It also engages in the development, operation, management, and sale of carbon credit assets; provision of carbon neutral advisory services; carbon neutral engineering and digital carbon neutral technology businesses; development and operation of negative carbon emission business; and management and investment in carbon neutral related fields, and carbon consulting and carbon planning business. The company was formerly known as Bisu Technology Group International Limited and changed its name to China Carbon Neutral Development Group Limited in April 2021. China Carbon Neutral Development Group Limited was incorporated in 2012 and is headquartered in Wong Chuk Hang, Hong Kong.