PPR, or polypropylene random copolymer, is a type of thermoplastic polymer produced through a gas-phase process that combines polypropylene (PP) and polyethylene (PE). The key structural feature of PPR is the random incorporation of PE molecules within the PP chain, with molecular weights typically ranging from 300,000 to 800,000. PPR pipes, also known as random copolymer polypropylene pipes, were developed in the late 1980s and early 1990s. These pipes have gained popularity due to their superior performance, versatility, and environmental benefits, making them a preferred choice in various applications and earning them recognition as a green building material. However, in recent years, numerous quality issues have been identified in the PPR pipe market. These problems, including inconsistencies in material quality and manufacturing defects, have raised concerns and hindered the sustainable growth of the industry. As a result, there is an increasing need for stricter quality control and regulatory oversight to ensure the reliability and safety of PPR products. Night Light,3D Night Light,Kids Night Light,Touch Night Light Shenzhen Huangtai Photoelectric Co.,Ltd. , https://www.huangtailed.com