It has been so hot about three weeks, we nearly can not stand the weather. In our company, four seasons are in the same time, the Spring is in the cut-up area workshop, its temperature is 10 centigrade; The Summer is external environment, the temperature is abtout 37 centigrade; The Autumn is in the first processing area, it is about 20 centigrade; and the Winter is in the refrigeration storage, it is the coldest area in the workshop, the temperature can reach -30 centigrade.