Mudstone interlayer is a weak layer in rock engineering. When it is subjected to continuous stress higher than its damage threshold. due to the dislocation of particles in mudstone crystals and the expansion of cracks. mudstone strength is gradually damaged and deteriorated and the strain gradually increases. https://www.bekindtopets.com/save-now-Aqua-Pure-3MFF101-Full-Flow-Drinking-Water-System-Replacement-Cartridge-flash-choice/