How to test led strip quality

1. Soldering Point    
      
          
You can see that our soldering point is very        
good and full, so the leds will not        
have any soldering-skip.          
          
2. LEDs arrangement         
All of our led flexible strips are produced by        
SMT machine, so you can see that all the leds       
are in line.. And look very nice :)        
                    
3. Waterproof

         
a. IP54 Waterproof         
All of them are produced by dripping-resin        
waterproof machine, so you can see that        
the waterproof is very smooth, and         
only few bubble inside the strips.        
         
b. IP68 waterproof 

        
All of them are also produced by machine, so       
you see the appearance is very smooth, and        
can't see any bubble inside either.         
In addition, it's totally full waterproof, you can put it        
into the waterproof for a long time :)        
         
Its accessoris are for free       
and also it's transparent  

     
        
        
4. Brightness         
  
   
Non-waterproof                                 IP54 waterproof                         IP68 waterproof 
You can see that the light is very shiny, and also the led color for each lot is same, not like this, for example, one led  
is 4000~4500k but the others are 6000~6500k.        
                    
What's the difference between ours and others?       
For 3528 leds, other factory use 9mil chip but ours use 12mil chip, so ours are brighter than most of others.