Search assemlies that needed/using by mine dtsx tasks

Hy, I put SSIS dtsx task from a server to another server. I needed know what assemblies have to using and where are they? Is anybody can give me some advice? I nearby know what own dll-s, but maybe near more. My project run, but I get watermarks when project use dll, but we paid for this.(early not watermark on other server.) Maybe how export dlls from GAC to another server.