Since April 8, when wuhan was officially opened, from Wuhan Heavy Duty Machine Tool Group Co., Ltd.（WZ）under China North Industries Group Corporation Limited (NORINCO GROUP), the marketing men of the marketing company, timely inquired about the prevention and control requirements of the foreign personnel in the customer's location, did a good job of nucleic acid testing, overcomed the difficulties of fixed-point isolation and time-limited nucleic acid testing, and silently rushed to the front line of the market. Even if the customers repeatedly refused them to visit, WZ machine marketing men still didn’t give up and went all out to achieve the targets. By the end of June, the total number of orders has exceeded 500 million yuan, which is a satisfactory result in the first half of the year.