1. With the easing of the epidemic and economic recovery, a large number of goods due to the epidemic backlog have been exported.

2. Since Amazon resumed creating shipping plan in May, sellers created a large number of orders within a short period of time and began to make preparations for Prime Day. The volume of shipments exploded, which led to the rapid expansion of warehouses of most logistics companies and the serious shortage of shipping space.

3. On the one hand, due to the negative impact of the global epidemic on global trade，some container ships are still refit desulfurization equipment in shipyards;On the other hand, some shipping companies are collectively feigning “illness” to bid high prices, to reduce shipping capacity.