Recently, total bureau of national qualitative check and national level appoint issued standard of country of material of 7 accept rice jointly, this is the standard of accept rice data that issues with national level form first on the world. 7 standards are carried out at rising on April 1, 2005. 7 standards are respectively: " technical terms of accept rice material " (GB ／ T19619-2004) , " accept ground rice not of particle size distribution determine law of scattering of X ray small part " (GB ／ T13221-2004) , " law of aeriform adsorption BET determines solid state material is accumulated than the surface " (GB ／ T19587-2004) , " accept rice nickel, " exceed imperceptible calcium carbonate " (GB ／ T19590-2004) and " accept rice titanium dioxide " (GB ／ T19591-2004) .