Group 1 - The event "2025 Hebei Listed Companies Investor Online Collective Reception Day" was held on September 15, focusing on the collective performance explanation of the 2025 semi-annual reports [1] - Cangzhou Mingzhu (stock code: 002108) introduced its self-developed RTP pipes, which are based on PE pipelines and applicable in various fields such as oil field ground gathering, water injection oil extraction, high-pressure alcohol injection, slurry transportation, medium and deep geothermal energy extraction, chemical media, and brine transportation [1] - The RTP pipes have significant advantages including corrosion resistance, high pressure tolerance, temperature insulation, good hydraulic properties, coilability, low overall cost, and long service life, showcasing strong technical competitiveness [1]