Core Points - China Gold Group Construction Co., Ltd. has announced a tender for the operation and maintenance outsourcing of the limestone mining project in Lingbi County, with an annual production capacity of 9.9 million tons of sand and gravel from 2025 to 2030 [2][4]. Group 1: Project Overview - The project involves the operation and maintenance services starting from the unloading platform, through coarse crushing, long-distance transportation, to the buffer workshop, fine crushing, and screening workshops, and finally to the finished product warehouse and loading system [5]. - The total investment for the limestone mining project in Lingbi County is approximately 3 billion yuan, with the mining rights acquired by Suzhou Chaoyue Industrial Co., Ltd. for 1.59 billion yuan [2][4]. - The total resource reserve is 59.6483 million cubic meters (equivalent to 160.048 million tons), with a production scale of 9.9 million tons per year and a concession period of 17 years [2][5]. Group 2: Tender Details - The tender is open for bids until August 22, 2025, at 13:30, and does not accept joint bids [2][4]. - The project has been approved by relevant authorities, and the funding has been secured, with the project owner being Suzhou Chaoyue Industrial Co., Ltd. [4][5]. - The tendering agency is the centralized procurement tendering center of China Gold Group Co., Ltd. [6].