Product Description Factory spine agricultural machinery engineering industrial transmission conveyor chain  Product introduction Material Carbon steel ,Stainless steel etc. Surface Treatment Polishing,Original Colour,Polishing Applicable Industries Building Material Shops, Manufacturing Plant, Machinery ……… Standard or Nonstandard Standard Heat Treatment: High Temperature Hardening Color Elf,dark yellow,dark blue,black Features •Large reduction ratio (usually up to 1:7)•Chains can be…