Thanks!
I tried Sketchup importer and it works , but eventually i need to have step file to import into moi3d.
Sketchup can't export step files. Other methods are expensive for me.
There are some online converters which i can not use because files are sensetive.
Just to mention that i spent whole day yesterday to find a way to convert JT to STEP file.
I understand that JT file is a specific one and only few softwares can work with that and it cost thousands of dollars.
I tried FreeCad, JT2GO, CAD Assistant, MeshLab, Sketchup and so on.
Most of free softwares allow you to view JT files but not exporting.
So Thanks Again for everyone!