Zhengzhou Huashuo Precise Porcelain CO. Ltd established in May 2001,occupies area of 10,000m2, has been invested 35,000,000 RMB,It has passed the certification of the quality management GB/T19001-ISO9001:2000,honorably won the national innovation fund for middle-small enterprise as well as obtained the national torch project. Our prime products contain mechanical seal rings,such as O-series and all products according to DIN 24960 standard,and related the national standard,including the following products. e g, flat ring, rotary ring, stationary ring, double-step ring, middle groove ring, shaft, bearing, various side shearing, top rake, grooving, perforation, multi-step abnormal ring, nozzle and bulletproof plate, etc. Now,All products are exported to Europe, North America and Taiwan，and developing the home market as well.