Led signs, advertising posters inspection:led display sign, advertising led light sign
Different kinds of Led signs quality control:
Full-color Outdoor LED Display Sign,Advertising Equipment waterproof led light sign panel,CE approved programmable led sign,advertising front light acrylic 3d led channel letter sign,Super brightness acrylic resin led open sign for cafes bars cafes restaurants advertising and promotion,
led signs, advertising posters inspection:led display sign quality control
Some common factors for Led sign inspection:
1.Appearance quality:the surface of the product shouldn't have visible defects(dirty, Scratch mark,crack etc)
3.Workmanship:defective list
4.Measurement :size & weight
5.Bar code test
6.Comfort level detection
8.Basic function test 
9.Screen check
10.Hi-pot test
11.Internal check
12.Product endurance test(4H)
13.Power check
14.Tape check on silk- screen/painting/electroplate


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