2020 Stable Version, integrated machine with both French and Chinese national standards for RCM methods. The 2020 Stable Version Chloride Diffusion Coefficient RCM Tester independently developed by Beijing Nailde Co., Ltd. utilizes an independently developed automatic voltage regulation system, capable of outputting stable high-precision voltage and achieving high-precision current, ensuring better measurement accuracy of the equipment with all voltage levels exceeding standard requirements. The 8-inch touch screen has a user-friendly interface, and the test fixtures are made of imported high-purity acrylic materials, colorless and transparent, with strong corrosion resistance. The all-in-one machine with two algorithms offers powerful functions, a fully automatic data acquisition and control system, and measurement accuracy that meets and exceeds national standards, making it an optimal choice for quality inspection and scientific research institutions.