Recently, the National Non-ferrous Metals Standardization Technical Committee convened the Non-Ferrous Metals Industry Standards Certification Conference in Nanning, Guangxi Province. The method for the determination of cryolite chemical analysis methods and physical properties was established under the chairmanship of Duo Duo Duo. Part 15: X-ray fluorescence spectrometry ( The standards for the determination of elemental content by tableting method and the method for determining the chemical analysis method and physical properties of aluminum fluoride - Part 15: Determination of elemental content by X-ray fluorescence spectrometry (tabletting) - were successfully passed. At this point, the number of standards made by the Fluoride Corporation has reached 54 items. WPC Furniture Board,PVC Furniture Board,Board Making Machine Weier Plastic Machinery Co., Ltd. , http://www.plasticextruderline.com