Certification we've gotton: ISO9001: 2008, SGS
In order to serve and supply you better products,we sincerely hope that you could afford such information as below:
1)Detailed size or Dimension:Outer Diameter,Bore Diameter,Teeth Number,Thickness,Segment Size;
2)Segment Welding Methods:Laser,High frequncy,Hot press,Cold press
3) Base Body Materail: 9CrSi,Steel,or others
4) Your Quantity;
5) Your diagram;
6) any other information you want to know.