Ningbo Qiaopu identify poor methods of the power cord plug

Ningbo Qiaopu Electric Co., Ltd. is a manufacturing, research and development, marketing companies the power cord plug, the following summer to teach you determine the power cord plug is good or bad ways:
1, look like label printing, illegible address unknown. Refers to the label and see the printed words on the insulation jacket, if there are typos or printing shades, vague words, to attract attention.
2, hand twister insulation, fade, out of the word poor quality. Is the rub with your fingers insulating jacket, and some low-grade insulated wire jacket easy to fade, especially the red line will face this problem, by rubbing a finger left on the line after the skin on the skin color or print online word was erased generally poor quality lines.
3, and then draw the nail, pinch line, designated under the peel line general. Is designated with a nail, pinch Insulation can draw, the pinch off one of the generally poor quality lines.
4, repeated bending insulated wire, three to four times on the break. Refers to the repeated bending of the insulated wire, wire insulation is generally poor quality poor material, bending 3 to 4 times the insulation layer will be broken.
5, the fire ignited insulation, leave that line of fire ignition. Is a light insulating layer, leaving the fire to spontaneous combustion is poor after the line.
6, commonly used in aluminum and copper conductors, color, luster dimmed light. Is the core to see the color line, poor-quality line of dark color and no metallic luster.
7, small amount of inner and outer diameters, the weight to see the softening. Is, if the above six methods can not be determined, you can also measure the diameter of insulated wire and cable core diameter tolerance is ± 10%, if the measured value exceeds the allowable error, basically inferior insulated wire