E-Station Green Technology Group Co., Limited is an investment holding company engaged in restaurant operations in the People's Republic of China and Hong Kong. It operates through two segments: Restaurant Operations and Food Supply Chain Services. The company provides catering services and agency services related to food supply chain services for food ingredients. It also operates Western-style casual dining under the Windwill Restaurant & Bar brand and rice noodle shops, and sells food ingredients. Formerly known as K Group Holdings Limited, it changed its name to E-Station Green Technology Group Co., Limited in March 2024. The company was incorporated in 2014 and is headquartered in Quarry Bay, Hong Kong.