The floor drains produced by our company have independent intellectual property rights and have won multiple patents. Patent numbers: ZL200530103206.9, ZL02318314.4, ZL02318313.6, ZL200420108978.1, ZL03219211.8, ZL200420080117.7, ZL200520100116.9 ZL200530109540.5, etc. Please be cautious of counterfeits.