... has a unique patented technology manufacturing, we call it twinlock yarn.B, Features: super wear-resistance, thus mop can be machine washed ... hot water up to 90 degrees plus, 20 minutes each, yarn will not spread. C, The use of premises: the mop ... /Damp/Wet multi-useFeaturesProfessional industrial cleaning mop with our patent yarn, longer service life, super water absorption, low-shrinkage rate, high ...