Samkrg Pistons & Rings - Bull Run in Auto Ancillary Samkrg Pistons & Rings Ltd , set up in March 1985, is in the manufacture of Pistons, Piston pins and Piston-rings for the automotive markets. It has plants at Hyderabad and Srikakulam near Visakhapatnam. SAMKRG caters mainly to the two-wheeler segment (accounted for 95% of its revenue in FY20).
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