About Us

SND has fully passed the ISO9001 quality management system certification. During the production process, it implements a number of strict

detailed standards and conducts full-process quality control. Our company has well-equipped chemical laboratories and physical performance

laboratories. A complete set of testing equipment such as Direct Reading Spectrometer, Metallographic Microscope, Hardness Tester, Universal

Material Testing Machine and Pressure test machine can be used to effectively control chemical composition and ensure mechanical

performance.