The main supporting fields of rectangular connectors are transportation, communication, network, IT, medical care, home appliances, etc. The rapid development of product technology level in the supporting fields and the rapid growth of the market are strongly driving the development of strip connector technology. The bar connector has developed into a serialized and specialized product with a complete range of products, rich varieties and specifications, various structural types, professional direction segmentation, obvious industry characteristics, and standard system specifications.

In general, the development of strip connector technology presents the following characteristics: high-speed and digital signal transmission, integration of various types of signal transmission, miniaturization of product volume, low cost of products, contact termination. The method is surface-mounted, module combination, convenient plugging and unplugging, etc. The above technologies represent the development direction of bar connector technology, but it should be noted that: the above technologies are not necessary for all bar connectors, and bar connectors in different supporting fields and different use environments require the above technologies. The point is completely different.