GY/VGD-200-PH3-G (0-1.000 ppm) high-precision
GUOYUGRA GY/VGD-200-PH3-G (0-1.000 ppm) high-precision phosphating hydrogen Detector
NBCLab takes or designs pictures, and embezzlement is strictly prohibited
[Statement] The pictures are for users' reference. Due to product upgrading or shooting level, please refer to the real object