In China the main border ports for small trade imports of potassium chloride are Manzhouli, Suifenhe and Erlianhot, among which Manzhouli is the most important port, which alone accounts for the vast majority of border trade imports. No matter which port it is at, the import of potassium chloride is mainly in bulk caravans and non-container transportation. It is also understood that as early as 2012, the Manzhouli port had become the first land port to use mechanized fertilizer replacement.

From January to October 2021, the total import volume of potassium chloride at land transport ports reached 1.443 million tons, accounting for one-fifth of the country's total imports. Especially in recent months, as new major contracts have not been signed, seaborne imports have gradually decreased, and the importance of relatively stable border trade markets has become more prominent.

In the latest news, import orders have just been signed in December, costs continue to rise, and the quantity may decrease. But before the new sales price in the border trade market was confirmed, the potassium chloride market was caught off guard by a few news that followed. In contrast, the influence of the news that the salt lake potassium chloride is about to stop production is much weaker, after all, there have been rumors and psychological preparations.