Generally speaking, most of the keys on the film switch use color to express the position and shape of the body, so that only by the operator's vision to identify the accuracy, there is no proper reaction information to indicate whether the finger is pressed in the film switch is useful.
1, The appearance is good, and the appearance should be flat, no scratches, color spots and other shortcomings of the appearance.
2, Weather resistance is better, in the natural environment, not deformation, cracking and aging, etc. , to have better chemical resistance. Film switch manufacturers pointed out: only to meet some of the above conditions can be said to be the quality of the film switch.
