1>good qulity with best price 2>good service 3>suitable packing 4>specialized manufacturer and QC 5>large stock6>prompt delivery 1:Usageit is used in welding flux, toothpaste additive, water treatment chemicals,preservative, bactericide, slagging medium of metallurgy, adhesive, papermaking and constrution industry.2:Component Test itemChemical standardTest resultContent(NaF)%≥9898.23SiO2%≤0.50. ...