Hi Narong,
For registration issues,Please find below my suggestions,please let me know whether it is ok for you.
1.CFS---As I attached file last my,only need to have authorization by CCPIT(please see model as attached.)
2.ISO--As I attached file last my,only need to have authorization by Thailand Embassy(please see model as attached).
3.Declaration and product list,please find attached sample,please check whether it is ok or please modify directly in the file,then we only need to have Chinese Notray party attestation(please see model as attached).
Waiting for your reply.