Hi there, in this manual
https://astronomy-imaging-camera.com/manuals/How_to_clean_ASI_camera_and_redry_the_desiccant.pdf
About cleaning the camera and redrying the desiccant, you forgot an important point:
There is a rubber O ring in these cameras.
I have an underwater camera housing. These have similar seals to prevent moisture coming in. And there, it is always noted that one must regularly and gently put a small amount of grease everywhere on the rubber ring.
And even if one does this, one has to exchange the O ring regularly.
Otherwise, the rubber will dry out and develop holes and cracks through which moisture can come in.
Of course this is more important in an underwater camera than in an astro camera.
But if the camera should last some years (and the larger asi cameras are certainly build to last 10 years or so), then one should think of regreasing the O ring every year or so.
This means you should also sell silicone grease for the rings and replacements for the O rings, perhaps in one package with the desiccant tablets.
Best regards Benni
