(1) The insulator shall be handled with care to avoid collision with iron parts, tools and other sharp and hard objects.

(2) When the product is lifted, the knot shall be tied on the end accessories. It is strictly prohibited to tie on the umbrella group or the sheath. When the rope must touch the umbrella group and the sheath, the contact part shall be wrapped with soft cloth.

(3) Do not step on insulator umbrella group.

(4) Composite insulator shall not be used as auxiliary tool for setting out, so as to avoid damaging insulator due to impact force or bending.

(5) When installing the grading ring, pay attention to adjust the grading ring to be installed vertically with the axis. For the open grading ring, pay attention to the opening direction at both ends, which is conducive to the discharge and umbrella group.