... material:40MN 2.color:natural, yellow, black,blue High Quality Rice Harvester Chains(agricultural chain zgs38) High quality alloy material ensure the ... fit standard of ISO, ANSI, DIN, and JIS, its heat treatment is advanced and material is selected alloy steel. The products ... have been sold to the whole country and Europe, American, Middle-east and South-East Asia.The Chain technic treatment ...