1. Preparation before going to work:
1.1 Dressed neatly, labor protection products are fully worn.
2, ingredients:
2.1 According to the ingredients card, the raw materials are matched.
2.2 Check if...
1 , before starting, first check the water, gas, electricity is turned on, the following operations can be carried out after turning;
2 , the operator must prepare the corresponding insulation sho...