protect hard floor chair mat

If use the table chair in a changeless position, some aftermath will appear as follow:
1. the floor board or the carpet will be broken and the split will be appearance;
2.the floor board or carpet will be broken;
3.you need change new floor board or carpet.
me trace will be appeared, if you move the chair.
If you use  PVC chair mat, follow problem will be solved:
1.you can move the chair freely and do not afraid of the floor and carpet;
tect the floor board and carpet always;
3.the trace will not appear again;
4.your floor and carpet will be used for a long time.