Group 1 - The core point of the article is that Yuanda Environmental (600292) has established a joint venture with China Coal Xi'an Design Engineering Co., Ltd. to focus on environmental technology related to coal-fired power plants and water services [1] - The initial registered capital of the joint venture is 5 million yuan, which will increase to 120 million yuan based on project investment progress [1] - Yuanda Environmental holds a 49% stake in the joint venture with an investment of 5.88 million yuan, while China Coal Xi'an holds a 51% stake with an investment of 6.12 million yuan [1] Group 2 - The joint venture aims to expand the business of flue gas treatment and water service concessions for China Coal Group, with plans to extend services beyond China Coal Group in the future [1]