(1) Test before use. Before each use, the upper and lower surfaces of the insulating pad should be visually inspected.

(2) Temperature. The insulating pad should be used in ambient ambient temperatures between -25 and +70°C.

(3) Protection during use. It should also be protected from contact with engine oil, grease, transformer oil, strong acids, and strong alkalis.

(4) When the insulating pad is dirty, it can be cleaned with soap at a water temperature not exceeding 65°C and then dried with talcum powder.

(5) The damp insulating rubber pad should be dried, but the drying temperature should not exceed 65°C.