The 5 sections including:
1)?Refining Segment: American Standard> Medium Pressure> Medium and Small Caliber> Carbon Steel;
2)?Refining Segment: American Standard> Medium Pressure> Large Caliber> Carbon Steel;
3)?Refining Segment: American Standard> Medium Pressure> Stainless Steel, Alloy steel;
4)?Refining Segment: Chinese Standard> Medium Pressure;
5)?Oil Field Segment: Medium and Small Caliber> Carbon Steel,Stainless Steel, Alloy Steel.
Post time: 20-12-20
