Hi Sir/Madam,
Nice to meet you.
It's nice to have your inquiry to us. CTIES is typo? correct is CITES:)
Regarding CITES certificiate could be issued by China CITES management departments as long as the applying product be qualified.
We believe could provide the relevant service to you .Not sure if you could share more background such as sturgeon photo(or HTS code)/ destination country /forecast qty per year, so that we can identify how to provide the service to you.
Details please reach out my email yaping.wang@landinglawyer.com /cellphone +86 13585924468 /Jilly Wang