Established in 1997, Zhengzhou Hongtuo Superabrasive Tools is a manufacturer of superabrasive honing stones and grinding wheels in central China (Henan). Our company employs 350 employees and our 18,000-square-meter facility houses over 300 sets of advanced devices. With this raw power, we can create 10 million honing stones and 6,000 CBN wheels each year. We operate according to ISO 9001:2000 standards and were awarded New High-Technology Company and New High-Technology Products by the ...