Paint is harder the better?
actually not. Hardness is too high will inevitably lead to brittle film. Some paint film hardness is high, but with a hard object (such as cut short nails) hard to characterize, there will be whitening phenomenon, indicating that the film has been stripped and substrate, The protection and decorative effect of the plate. Therefore, sometimes the paint film is too hard but is a disadvantage. Film hardness should be enough to stop, one-sided pursuit of hardness is often worth the candle. Of course, the film is too soft and easy to leave traces of daily bumps affect the appearance. Generally speaking, the hardness of the film can reach 2H to meet the needs.