By contacting the clinical trial of medical device section via email: mdci @sfda.gov.sa

Healthcare provider, transporter and importer/exporter facilities should all register and take final approval to submit import, re-export or transfer of medical radioactive material request. 

Not necessarily, and regulatory bodies often take the manufacturer's recommendations into account in such cases, and it is not prohibited to add some requirements according to each case separately.

written, electronic or oral communication that alleges deficiencies
related to the identity, quality, durability, reliability, usability, safety or
performance of a medical device that has been released from the
organization’s control or related to a service that affects the performance
of such medical devices

SFDA have the health certificates for food products stating all requirements to export food to KSA, in the following link: https://www.sfda.gov.sa/en/regulations?tags=1 

In addition, the interested competent authorities shall sign the health certificate and send it to the SFDA. If the competent authority has any inquiry regarding the health certificate it can be discussed with SFDA.
Its published in Conditions & Requirements for Importing Food to Saudi Arabia
https://sfda.gov.sa/en/regulations/66195

The quantity cannot be exceeded until it is modified in the practice license, then modify the data in the electronic system.

The appeal process to rejected shipments is published at:  (Click here)

There are many Published studies. In addition, SFDA have approved scientific papers internally this year. Currently, they are under publishing process in different journals. In addition to one published scientific paper entitled “The occurrence and dietary intake related to the presence of microplastics in drinking water in Saudi Arabia”, It can be found here 

DOI: 10.1007/s10661-021-09132-9

Currently, no fees are required for registering in the system.