RAIZI Tool Co.,Ltd(www.raizi.com) established in 2006,engaged in manufacturing the most professional polishing and grinding diamond tools forconcrete and terrazzo flooring industry in China.Our factory is located Dongying,Shandong,China.We set up a strict quality control system and testing laboratory site to study and test the tools before they come to the market.RAIZI brings its know-howand proprietary technology to the stone diamond tool s and concrete floor gringding industry.