Langfang Huaneng Hongyu Plastic and Rubber Products Co., Ltd., Branch in Dacheng, is a leading manufacturer and research institution of thermal insulation materials in northern China, specializing in rock wool, glass wool, and other thermal insulation materials. Adhering to the corporate philosophy of "leveraging industrial strengths and promoting energy-saving society," the group dedicates itself to continuous innovation, and has grown into a renowned national producer of new energy-saving building materials. The group spans an area of 420 acres and employs over 700 staff. Currently, the group's industries are distributed across the Economic and Technological Development Zone in Langfang City, Hebei Province, and the Liugezhuang Thermal Insulation Building Materials Industrial Park. The group boasts substantial financial resources and advanced technological capabilities, with a product sales network that covers the entire country and extends internationally to the United States, Russia, Germany, France, Malaysia, and Southeast Asia.

For many years, the company has adhered to the quality policy of "Scientific Management, Customer Satisfaction," treating product quality as the foundation of its operations and quality assurance as a fundamental element of its management system. In 2001, the company successfully obtained the ISO9000 international quality system certification. The company integrates scientific research and development, production and manufacturing, and sales. Additionally, it implements scientific management for all equipment and production technologies, and conducts full-process quality and technical tracking and monitoring of the production process. In recent years, the company's R&D department has actively developed and combined domestic and international short-cut technologies, successfully producing an internationally advanced rock wool automatic production line with a daily output of up to 100 tons, which was smoothly put into production in 2007.