China Topper Valve Packing Seal Kits Co., Ltd. (https://www.valvepackingsealkits.com/ ) is a professional manufacturer of API-standard industrial valves, sealing gaskets, and packing solutions, dedicated to delivering reliable performance under the most demanding operating conditions. Our product portfolio includes gate, globe, and ball valves engineered for critical applications, featuring advanced low-leakage graphite packing and exceptional resistance to extreme pressure and temperature environments. Complementing our valves, we provide high-performance sealing gaskets and packing materials designed to withstand chemical corrosion, thermal cycling, and mechanical stress. All products are rigorously tested and certified by internationally recognized bodies such as TüV SüD and TüV Rheinland, meeting standards including API 622, API 624, API 641, ISO 15848-1, and TA-LUFT. Driven by a commitment to performance and innovation, we invested early in the research of low-emission sealing technologies. In collaboration with leading universities and research institutions, we studied the science of friction, wear, and sealing behavior, resulting in our first TüV-witnessed API 622 certification—a milestone validating the dependability of our solutions. To date, we have tested more than 500 valve models, ranging from 1/2 inch to 20 inches and pressure classes from 150 LB to 2500 LB, under conditions spanning cryogenic -196°C to extreme 400°C, ensuring our products meet real-world application demands. At China Topper, we believe innovation extends beyond manufacturing to understanding the science behind valve performance. Our team of experts in engineering, materials science, and automation is dedicated to advancing sealing surface technologies, enhancing material durability, and developing smart, dependable solutions. By bridging academic research with industrial application, we provide products that deliver safety, efficiency, and long-term reliability across a wide range of industries.