https://www.jhchaoyuan.com/product/mop-replacement-head/cy201r6-pva-mop-refill.html CY201R-6 PVA Mop Refill is a PVA mop replacement head. PVA, the abbreviation of Polyvinyl Alcohol, is a material with excellent water absorption and cleaning capabilities. This type of mop head is commonly used for household cleaning and floor cleaning tasks. They are designed to absorb moisture and dirt, making cleaning more efficient. CY201R-6 may be the model or specification code of the product, used to identify specific product styles or sizes.