Sunko 737 G+ welder
I have the 737 G version with (+) I definitely recommend it, it survived over 2 years of torturing me and it wasn't easy :)
https://alii.pub/6kfvsk - Sunko 737 G+
https://alii.pub/6kfvtc - Electrodes 3x100mm Asymmetric
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Unboxing video :P
https://youtu.be/s9znpI308_0
Video After One Year of Use: