Companies strictly enforce the ISO9001: 2000 international quality system certification standards, through the Chinese national compulsory product certification the products are better than national standards GB/T4100_ _2006 Appendix G, and in line with national GB6556_2001 "Limit of radionuclides in building materials." The Class A requirements, are green products, production and marketing of nuclear use is not restricted. I broke always adhere to the "quality-oriented, customer first" business purpose, will be the community work together to create a brilliant future