In 2021 we have made a technological revolution in the field of sewing with a straight thread chain seam of various materials up to 8 mm thick with a small needle bar stroke of 32 mm with the help of our world's first prototype of the ideal-universal ZARIF sewing machine double thread chain stitch, which works on the basis of our disruptive new ZARIF double thread chain stitch technology from 2021 using a rotary looper.

For centuries, since the first sewing machine was invented, mankind has not been able to invent an ideal-universal sewing machine that would allow high-quality stitching of various types of materials without any adjustments using a lockstitch type 301 or a double thread chain stitch type 401.

However, in 1994, for the first time in the world, inventor Zarif Tajibaev invented ZARIF technology for forming a double thread chain stitch using a rotary looper, for which US Patent No. 6095069 was issued in 2000 (see https://patents.google.com/patent/US6095069A).