I am Ahmed, a co2 welder. All welding modes 1g. 2g. 3g. 4g. 5g also 1f. 2f. 3f. 4f. 5f. I have extensive experience in the field of welding 17 years. In Egypt and Saudi Arabia, there are certificates and Jordanians. Experiences in Egypt. Al - Suwaidi. Al - Zamil Steel. Beshay Steel. And other companies. Saudi Arabia. Al - Kaabi Steel. Al - Attas Steel