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              Lesson 2 The tested properties of synthetic leather
               工業(yè)科技 
              
				
              

										 
                      On the following pages we will outline the items that indicate the properties of syntheticleather. These chemical and physical properties can be determined or measured.(1) The water resistanceIt mainly is used to measure the degree of water resistance of ......（本文共 3038 字）      [閱讀本文] >> 
               
			  
				 
              
				 
				
				
              
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