Green International Holdings Limited provides health and medical services in Hong Kong and the People's Republic of China. It operates through Health and Medical; and Beauty and Wellness segments. The company operates hemodialysis centers and hospitals; and offers medical services of internal medicine, nephrology, surgery, Chinese medicine, ultrasound, electrocardiography, medical laboratory, and medical imaging services. It provides beauty and wellness products and related services; and operates its beauty parlors under Marsa brand name. The company was formerly known as Smart Union Group (Holdings) Limited and changed its name to Green International Holdings Limited in April 2012. Green International Holdings Limited was founded in 1995 and is based in Sheung Wan, Hong Kong.