In March, with the downstream terminal workers returning to work, die-cast zinc alloy companies began to resume normal production. The company's planned operating rate in March also gradually rose to the pre-holiday normal level. Since early March, zinc prices began to decline in volume, the monthly decline was more than 2,000 yuan / ton, due to the low end of the pre-holiday stocks of raw materials, at this stage Obviously, the willingness to purchase on a low bargain is obvious. Some companies have indicated that their order performance at the beginning of the month is acceptable. According to the production plan of the company, the rate of start-ups for 3 jobs has risen significantly.