Donghong Co., Ltd. recently entered mass production of its specially developed UV-resistant PE pipes with black interior and white exterior. This differentiated product not only fills a technological gap in the company's specialty pipe sector but, with its unique performance, has become a new tool for expanding into overseas markets. Its first application project precisely addresses the high temperatures and strong UV radiation conditions of Guinea, Africa, providing an efficient solution for local infrastructure construction.

Guinea, located in western Africa, has a tropical savanna climate with average annual temperatures of approximately 26-30°C and strong UV radiation. A local project originally planned to utilize a "plastic pipe over steel pipe" solution to meet the requirements of open-air installation. However, this solution presented drawbacks such as high material costs and a long construction period. Donghong's marketing team thoroughly researched the project's needs and discovered that Guinea's environmental characteristics were highly compatible with the performance advantages of UV-resistant PE pipes with black interior and white exterior. They quickly collaborated with their technical team to customize a solution based on local climate data. Focusing on both cost-effectiveness and functionality, they presented the customer with detailed UV resistance test data and performance indicators. Ultimately, thanks to professional technical analysis and precise needs matching, the project plan was successfully replaced with Donghong's UV-resistant, black-inside, white-outside PE pipe, marking the first market launch of the new product.

To ensure the production quality of the UV-resistant, black-inside, white-outside PE pipe, the company established a dedicated raw material development team. From raw material ingredient testing to formula ratio adjustment, production cycle planning, and delivery milestone confirmation, team members repeatedly checked all parameters to ensure that qualified raw materials reached the production line as soon as possible, laying a solid foundation for smooth mass production. Through rigorous quality control, the product successfully passed multiple tests, providing reliable support for market launch.

The creation of the UV-resistant, black-inside, white-outside PE pipe represents a significant breakthrough achieved through process innovation, building on the company's extensive PE pipe production expertise. Its core innovation lies in the use of advanced co-extrusion equipment and processes, which co-extrude and laminate the outer layer of traditional PE pipe, creating a "black-inside, white-outside" double-layer composite structure. This not only changes the color but also comprehensively improves the pipe's performance.

The white outer layer has high reflectivity, significantly reducing solar radiation absorption and effectively lowering fluid temperature rise caused by heat conduction through the pipe wall, achieving the "low surface temperature, low fluid temperature rise" characteristic. The UV-resistant outer layer significantly enhances the pipe's aging resistance in outdoor environments, avoiding the brittleness and cracking associated with traditional black pipes and extending their service life. These dual core characteristics provide the product with a unique advantage in the international market.

From laboratory formulation testing to production line commissioning, the mass production of UV-resistant, black-on-the-inside, white-on-the-outside PE pipe is a vivid example of the company's "market-centric and customer-focused" business philosophy. This specialized pipe not only provides an efficient solution for projects in tropical regions like Guinea, but also marks a significant technological breakthrough for the company in the specialty pipe sector, injecting strong momentum into its international market expansion.