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From the appearance point of view, a good roll of electrical tape should have uniform color, flat cross-section, no convex volume, and no glue overflow, because if there is glue overflow, it proves that the glue of this tape has aged. Use this tape The entangled wire ends will loosen by themselves in a short time, causing serious consequences of electric leakage. You can pull off the tape, and feel the peeling force of the tape and the stickiness of the adhesive surface with your hands. Generally, the peeling force of the tape is moderate. If it is too light, it is not easy to wrap the wire. Pull deformation.
In addition, the stickiness of the rubber surface is stronger, but the more sticky the better, because in terms of the characteristics of the rubber, the rough surface of the rubber proves that the glue is poorly made, and it is easy to rot on the glue.
