... use; MPU been used in design and manufacture; Good QC system; 7~8 years life time from OEM ... control,stable welding process,small splash,deep molten pool,good forming * Arcs slow wire,ball cutting after welding ... . And other system and quality of the cells we use make the welder work good; and most important thing ... within 12 hours. OEM MIG welding machine/ High quality, Fresh technology, low price