In Shandong, a distinction can be observed between trade companies. Trade companies are responsible for conducting business transactions and generating revenue.

One key characteristic that sets trade companies apart from each other is their specialization. Trade companies typically have a particular niche or sector of the economy that they excel in. This specialized focus allows trade companies to offer products or services that are not readily available in larger, more diversified markets.

Another key characteristic that sets trade companies apart from each other is their customer service focus. Trade companies typically have a strong commitment to providing exceptional customer service. This focus on customer service enables trade companies to build long-term relationships with their customers, which can lead to increased sales and revenue generation for the company.

In conclusion, in Shandong, trade companies differ from each other in various key characteristics such as specialization, customer service focus, and relationship-building strategies. These differences between trade companies enable them to offer products or services that are tailored to meet the specific needs of their customers, which can lead to increased sales and revenue generation for the company.