Which is better, Shanghai welding machine or Kinned welding machine?

1. In terms of quality, the welding machine in Shanghai is made of steel, with light weight, high hardness and strong toughness, while the welding machine in Jinnaide is made of pig iron, with low hardness.

2. In terms of word of mouth, Shanghai electric welding machine has been sold for more than 20 years and has a good reputation, while Jinnaide electric welding machine has a short sales time and a poor mass base. So the welding machine in Shanghai is good.