Yardway Group Limited is a Hong Kong-based investment holding company. The Company is engaged in trading of vehicles, machinery, equipment, spare parts and provision of engineering services. It has four segments: Aviation, metro and railway equipment segment, Vehicles and spare parts segment, Dredging equipment segment and Provision of engineering services segment. The aviation, metro and railway equipment segment is engaged in sales of train and track maintenance equipment, and airport ground support equipment. The vehicles and spare parts segment is engaged in sales of coaches, trucks and spare parts of bus. The dredging equipment segment is engaged in sales of components of dredging equipment. The provision of engineering services segment provides warranty and maintenance services and after-sales services. Its subsidiaries include Yardway Enterprise Limited, Joy Win Ltd, Sinotruck Limited and Yardway Advance Power Equipment (Beijing) Co Ltd.

China Environmental Technology Holdings Limited is a Hong Kong-based investment holding company. The Company is engaged in trading of vehicles, machinery, equipment, spare parts and provision of engineering services. It has four segments: Aviation, metro and railway equipment segment, Vehicles and spare parts segment, Dredging equipment segment and Provision of engineering services segment. The aviation, metro and railway equipment segment is engaged in sales of train and track maintenance equipment, and airport ground support equipment. The vehicles and spare parts segment is engaged in sales of coaches, trucks and spare parts of bus. The dredging equipment segment is engaged in sales of components of dredging equipment. The provision of engineering services segment provides warranty and maintenance services and after-sales services.