if your working in 3dcoat 2023 or sim version, its here for windows 10x64
make a folder and drop the objs and png previews in there together
antenna_001.obj
and
antenna_001_preview.png
etc
https://pilgway.com/licensing/9
Once that 12-month period of free updates (the first year) is over, you will have an option to purchase any future release of the appropriate program within the next 12 months (the second year) at the discounted rate of 45 Euros (in case of 3DCoat) or 40 Euros (in case of 3DCoatTextura) yet with another 12 months of free program updates starting from the date of the upgrade. That means that you will be able to buy any version released from 26.04.2022 to 25.04.2023 at the very discounted rate with another 12 months of free program updates starting from the date of such upgrade.
marsmotion's post in [Solved] How to import multiple models into the library ? was marked as the answer