the mr oxygen meter uses a high-precision watch core to ensure stable oxygen output. 氧气表MR采用高精度压力表芯，确保氧气输出稳定

【Industrial High-Purity Oxygen Meter】Stable output, safe and durable! Features brass forged body and precision stainless steel diaphragm, with pressure resistance and explosion-proof capabilities. Precise calibration with an error of ≤1.5%, aerospace-grade sealing technology to prevent leaks. Solves the issues of unstable air pressure and inaccurate readings, enhancing welding efficiency. Ten years of technical expertise, trusted by millions of users, ensuring safe production for you.