1, Chain types: Roller Chain, conveyor chain, transmission chain, motorcycle roller chain, silent chains, oil pump chains, weld steel drag chains, plastic chains etc; 
2, Main materials: It is 40Mn. 40Cr, 45Mn alloy steel, SUS304, and POM Plastic for plates, 10#, 20#, 20CrMnMo, 30CrMnTi for pins and rollers; 
3, Heat treatment: Carburizing, Austemper Stressing, nitro-caburizing harden etc; 
4, Surface: Shot peening, black, blue or original; 
5, Package way: Plastic bag+ carton box+ plywood case 

We are a leading manufacturer of mechanical transmission spare parts, as well as several years one of reliable and trustworthy vendors for European, America, Iran market etc. Our main items are roller chains, conveyor chains, transmission chain, pulleys, V-belts, sprockets, spur gears, bevel gear, gear shafts, roller bearings, rollers, conveyor belts etc. 

At present, For South American, European, and Asian market, our superior products are fabricated according to your requirement and our quality meets ISO, ASME, DIN standard. 

I hope we can do business together, and look forward to hearing from you soon.