四方达：公司的资源开采/工程施工类产品技术成熟、性能稳定

Core Viewpoint - Sifangda (300179) has established a strong technological advantage in deep drilling through its polycrystalline diamond composite products, creating a significant core technology barrier in the materials sector [1] Group 1: Technological Strength - The company has accumulated numerous R&D achievements over the years, showcasing its robust technological capabilities [1] - Sifangda's products in resource extraction and engineering construction are mature and stable, demonstrating excellent wear resistance, impact resistance, and heat resistance [1] Group 2: Market Position - The company has excelled in oil and gas exploration and extraction operations, breaking the domestic high-end drill bit market's reliance on imports [1] - Sifangda has emerged as a strong competitor against imported diamond composite bits used for oil and natural gas drilling [1]