Dear K. Suwichai,
Approved and please try to select and get units from your stock for release to shipper first to avoid upgrade cost are the extravagant. Please confirm.
Please issue separate invoices and remark with upgrade for SIAM SYNTHETIC (print our approved email and attach on your upgrade invoices).
By the way we approved upgrade units listed below for support to SIAM SYNTHETIC only, ensure not release to other account.