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European standards are recognized as the highest and strictest standards in the world. The same as the choice of Chinese cast grinding balls suppliers. 

Before entering the European market, Ningguo Kaiyuan, one of the most professional manufacturers of steel balls in China, had a fierce competition with the world's suppliers of cast steel balls. It took two years to repeatedly submit and review relevant information, the European customers multiple factory inspections, finally entered the European market with high-quality product quality, perfect quality management, rigorous work style, and mature after-sales service system, and won the trust of European customers!