午夜性色福利在线视频网站,国产熟睡乱子伦视频观看看,日本xxxx18视频在线观看,免费午夜国产在线

<code id="bslnn"></code>
<i id="bslnn"></i>
    

    <ul id="bslnn"><legend id="bslnn"></legend></ul><cite id="bslnn"><table id="bslnn"></table></cite>
<dd id="bslnn"></dd>
    3. 

    

    
    
    	
    
        	The solar industry        
    
                
    Polysilicon ingot stripping silicon nitride coating solution
    The buyer: Tianjin * * New Energy Co. Ltd. etc.
    Recommended products:
     A1 Grade（4N）High purity silicon nitride powder.
            
    JSH A1 Grade（4N）Main indicators of silicon nitride powder
    ProjectUnitRangeTesting standards or methods
    N%＞ 39.6GB/T 16555-2008 / IGA
    O%＜ 0.8ASTMC1494-2001 / IGA
    C%＜ 0.2Leco method / IGA
    Feppm wt＜ 20ICP Method / GDMS
    Alppm wt＜ 10ICP Method / GDMS
    Cappm wt＜ 10ICP Method / GDMS
    Pppm wt＜ 3ICP Method / GDMS
    Sppm wt＜ 3ICP Method / GDMS
    Bppm wt＜ 3ICP Method / GDMS
    Si-free%＜ 0.05GB/T 16555-2008
    Si3N4(aphar)%＞ 90XRD YB/T 5320-2006
    D50um1.5±0.2GB/T 19077.1-2008