In the era of intelligent electric charging devices, one common factor across a diverse range of electric charging and hybrid power equipment is the use of high-capacity lithium batteries. As a result, comprehensive improvements in electric charging equipment architecture are needed, with connectors taking the lead. While electric charging equipment still faces challenges like power inadequacy, safety concerns, and convenience issues, it has undeniably become a burgeoning industry, an unstoppable trend, and a remarkable opportunity for the connector industry. **The Growth Trend:** The consistent growth in electric vehicles, residential and public charging stations, and charging cables indicates significant market opportunities. As the development of electric equipment goes hand in hand with the transformation of automotive fuels, forward-looking electric vehicles will connect with more efficient new power transmission infrastructure. With an increasing number of electric vehicles and related equipment entering the market, a rising demand for both hardware and software components emerges. However, beyond the need for rapid development, the key consideration in this emerging market should be consumer confidence in the safety of electric equipment and its associated application components.   **The Role of Connectors in Electric Equipment:** Connectors(eg:Electric Vehicle Power Delivery Plug,Lithium Polymer Battery Connector) for electric equipment encompass combinations of plugs, sockets, connectors, and terminals. Their primary function is to transfer power from external sources to the interior of the vehicle. These devices are equipped with sealed components that facilitate power, grounding, communication, and navigation control connections.  **Importance of Seal Tightness:** Ensuring the tightness of high-voltage circuits is of paramount importance. As we know, water and electricity are incompatible. To mitigate risks such as short circuits, a proper seal for high-voltage circuits is crucial. Utilizing circular seals for conductors and external seals for connectors ensures true tightness, preventing moisture from infiltrating and causing overheating or sparking. In comparison to traditional 12V systems, high-voltage systems demand even more robust sealing, as higher voltages increase the probability of arcing.   The role of connectors(eg:Power Transmission Connector) in electric equipment is pivotal, ensuring the seamless and safe transfer of power in the rapidly evolving world of electric vehicles and charging infrastructure. Seal tightness is a critical aspect to guarantee not only the performance but also the safety of these connectors. As the electric vehicle industry continues to advance, connectors play a crucial role in driving progress while maintaining the highest safety standards.