qualitysdard
gb/t 25808-2010
appearance
including flashing black flakes or granules
strength
200%
shade
approximate to the standard
moisture content
≤7%
insoluble substance in sodium sulfide%
≤0.5%
add：no.1 linxia road,meihua yuan district,xiangjiang,yuncheng,shanxi,china
tel：0359-7698399/7698388
call：/
fax:0359-7698398
zip code:043100
shanxi yinchang chemical co., ltd
welcome to yinchang