Core Viewpoint - The investigation reveals that several manufacturers are producing and selling substandard public fitness equipment, leading to safety hazards and injuries among users [1][3][45]. Group 1: Manufacturing Practices - Many manufacturers in Dingzhou are cutting corners by producing non-standard public fitness equipment, which has been linked to serious accidents across the country [3][19]. - The staff at Yuan Dong Li Sports Equipment Co., Ltd. admitted that their non-standard products are popular due to their low prices, despite also producing compliant products [7][19]. - The company reduces costs by decreasing the wall thickness of equipment pipes to 2mm, below the national standard of 2.75mm, compromising strength and corrosion resistance [9][11]. Group 2: Installation Methods - Manufacturers are using improper installation methods, such as relying on expansion screws for securing equipment, which is against national standards for certain types of fitness equipment [11][14]. - The use of expansion screws for ground installation is a common practice among manufacturers, despite regulations prohibiting it for specific equipment types [22][30]. Group 3: Compliance and Certification Issues - Some manufacturers are willing to customize and falsify compliance certificates to meet customer demands, regardless of actual product standards [14][24]. - Reports indicate that companies are producing equipment that does not meet mandatory national standards and are providing fake inspection reports [43][49]. Group 4: Regulatory Response - Following the investigation, the National Market Supervision Administration has taken action by launching investigations into the involved companies, leading to product seizures and production halts [45][47]. - Authorities are conducting a comprehensive review and rectification of local sports equipment manufacturers to address the widespread issues identified [49].