From a fundamental point of view, the domestic production areas in Yunnan and Hainan are affected by the weather and the supply of raw materials is relatively small. The main production areas in Thailand have already started cutting, but the supply of raw materials at the beginning of the cutting is also tight; the current tire manufacturers have less adjustments. However, after entering May, manufacturers' shipment pressure is relatively high, and market transactions have not changed much. The overall performance is still relatively flat. Recently, the inventory of all-steel tire manufacturers is higher than that of semi-steel tires and is still growing.