As one of the drying equipment, lyophilizer machines belong to the category of general mechanical equipment, and their HS code is: 8419331000. Lyophilizer machines are exported to the United States, and American importers can enjoy most-favored-nation treatment. Because the price of lyophilizer machines exported to the US market is very cheap. However, the tariff policy of US President Trump has made the import tariff of lyophilizer machines like a roller coaster, from low to high and then low again within 1 month. This is unfair to customers who import customs clearance in April 2025.

The economic complementarity between China and the United States is high. The United States has a good team to design lyophilizer machines; there are many companies in China that produce lyophilizer machines with high production efficiency and fast delivery. There are also some small home lyophilizer machine manufacturers in the United States. They import semi-finished products and accessories from China and assemble them in the United States. The companies from China will also import some spare parts from the United States. Trade is mutually beneficial. A protracted tariff war is of no benefit to China and the United States, or even the global market. It will also lead to high commodity prices and global inflation.

Fortunately, in May 2025, representatives of China and the United States reached a trade agreement in Switzerland, reducing tariffs from 145% to 30%, which will help American freeze-drying machine importers save a lot of money. The trade war between China and the United States may continue to fluctuate in the future. American investment can consider building freeze-drying production lines in Latin America and Africa, where raw materials are abundant and labor costs are low. Finally, the freeze-dried products will be sold to Europe, Japan and China. These countries and regions are potential markets for freeze-dried products.