Dear Kaneko-San,
After review the letter, I think;
1. Specification: If you can issue only one letter, you should have SA516-70N too. The PO5707098 is for Normalized plate. If not, you should separate letter SA516-70AR and SA516-70N
2. The PO should read PO5706257, (PO5707098). The Normalized plate MTC show PO5706257 but our PO is 5707098
3. There is an additional requirement, refer to attached file. Kindly confirm the material and manufacturing according to A20/A20M
4. If possible, kindly put all Cert. No and all Heat number for final review.
Thank you for your kind support in advance.