of Chinese Stone Machinery
Humidity indicator card is a product that detects relative humidity in sealed packaging, while cobalt-free halogen-free humidity card is one of the most advanced products, after the use of human skin process found to detect moisture is non-toxic and harmless
Cobalt-free halogen-free humidity indicator card (COBALT FREE HALOGEN FREE) is a simple and inexpensive safe way to detect ambient humidity, users can immediately determine the color on the card in the product packaging humidity and desiccant effect. If the humidity in the package exceeds or equa...