The insulator not only acts as insulation, but also provides centering and protection for the protruding contacts, and also has the functions of installation and positioning, locking and fixing on the equipment. Poor fixation, the light one will affect the contact and cause instant power failure, and the serious one is the disintegration of the product.

Disintegration refers to the abnormal separation between the plug and the socket, the pin and the jack, which are not caused by the structure due to the material, design, process, etc., when the terminal is in the inserted state, which will cause the power transmission and signal of the control system. Control the serious consequences of disruption.

Due to poor design, wrong material selection, improper selection of molding process, poor quality of heat treatment, mold, assembly, welding and other processes, and improper assembly, etc., will cause poor fixation.

In addition, the appearance is poor due to peeling, corrosion, bruising, plastic shell flashing, cracking, rough processing of contact parts, deformation, etc., due to excessive positioning and locking matching size, poor consistency of processing quality, and excessive total separation force. Poor exchange caused by major reasons is also a common disease and frequently-occurring disease. These kinds of faults can generally be found and eliminated in time during inspection and use.