公元股份：目前母公司公元股份及子公司上海公元、安徽公元、天津公元、湖南公元为高新技术企业

Group 1 - The core business of the company is the research, production, and sales of plastic pipe products, which are closely related to the chemical industry due to the raw materials used [1][3] - The main raw materials for plastic pipes include PVC, PE, and PP, which are classified as chemical products, indicating that the company is not part of the chemical industry but has significant ties to it [1][3] - The stability of raw material supply, price fluctuations, and technological advancements can impact the company's production and operations [1] Group 2 - The company has several subsidiaries, including Shanghai Gongyuan, Anhui Gongyuan, Tianjin Gongyuan, and Hunan Gongyuan, all of which are recognized as high-tech enterprises, while Chongqing Gongyuan is currently undergoing re-evaluation for high-tech status [1] - Some plastic pipe products from the company have applications in the chemical sector, but this is not considered the core business [1]