PTA in the future is an important reference index. When weaving, we should pay attention to the polyester production and sales rate, polyester inventory, textile city, China textile and garment export and domestic retail fabric sales data. PX is the main reason for the strength of PTA at present because of its high price. The new start-up capacity of PTA in the later period (such as 6,543.8+0.5 million tons of PTA in Far East in May and 6,543.8+0.2 million tons of PTA in Tongkun in June) and the start-up situation will affect the polyester situation. In particular, PX enterprises will have a great impact on the price in case of faulty parking. At present, the capacity of naphtha and MX is sufficient, so it depends on the upstream oil level.