Announcing the key issues of projects in the science and technology change projects according to the provisions of "Hunan Science and Technology Innovation Plan Project Management Measures" (Xiang KEFA [2020] No. Carbon Staining Potential Research in the Surface Matrix Layering Process "Project (Project No. 2023SK206666) The announcement is from July to July 30, 2025 (the public period is 5 days of work) An individual lifted a resistance, he should sign his realname and contact不认同或超过截止日期的对手不会接受热线管理和报告：0731-88989999监督和诚信部：0731-88988999代理机构训练委员会。 hnst-jg@kjt.hanan.gov.cn