Must fingerprints taken at a provincial police station (e.g., Khon Kaen or Udon Thani) be signed by a duty officer?

From our Bangkok back-office next to RTP HQ: We handle end-to-end Police Clearance Certificate issuance from the Royal Thai Police for foreigners in Thailand and abroad, for submission to the destination immigration authority or embassy. Workflow: (1) verify source documents — passport / Thai ID / status proof, (2) schedule fingerprinting at our office or a district police station, (3) our Runner files at RTP HQ, (4) collect the certificate and bundle certified translation + MFA/embassy legalisation in a single dispatch. Send scans of your passport + Thai ID (or foreigner's passport + WP/visa page) to LINE @NAATI or contact@naati.ltd for a case check by our staff.