First, identify from the product certification 1. The LYC bearing certificate is printed with 80g double-adhesive paper. The certificate size is A4 paper ÷8. The labels are printed neatly, the thickness is uniform, and the font is clear. 2. The...
In essence, the pump is a very widely used fluid machinery, has the advantages of simple structure, small size, light weight, stable flow, easy to make and easy to maintain, etc., is widely used in chemical, petroleum, electric power, metallurgy Gold,...
