Thank you for your answer but printing bar-code from a bar-code printer via ThingWorx is a difficult process. Because Bar-Code printers use ZPL or similar languages to understand and print specific document.
In ThingWorx, we can generate bar-code and list them multiple times in a grid but when it comes to printing, browsers print functions takes charges and print whole page. Bar-codes which needs to align specific area and specific size (in mm sensitivity), browsers printing function became unusable.
So we needed to write new extension to print via ThingWorx