About 84 products for  leather tanning chemicals  (0.001)
		
        
                        
                    
                        
		  		  		  
			
			
			
			
				70% Yellow Flakes Sodium Hydrosulfide
				Desc:Specification(GB 23937-2009):Iterms StandardsNaHS%: 70%minNa2CO3%: 1 %maxFe%:0.0015-0.003 % maxWater insoluble%: 0.005 % maxNa2S2O31.5% maxNa2S3-4 % m...
				
				
					2024-01-11