The introduction of a trade company in Linjiang, licensed under specific regulations, involves several key elements.

1. Company Formation: The trade company is legally established in Linjiang. This includes registering the company with relevant local authorities and obtaining an enterprise registration certificate.

2. License Acquisition: To operate as a trade company in Linjiang, it must be licensed accordingly. This typically involves applying to a specific government department responsible for trade licenses.

3. Trade Activities: Once licensed, the trade company can engage in various activities such as importing/exporting goods, providing trade services, and conducting business operations within Linjiang.

In summary, introducing a trade company in Linjiang with a valid license is a multi-step process involving company formation, license acquisition, and operational activities.