I searched for a long time for a reliable source for the OPCOM program and eventually chose this service. I am more than satisfied with the result! Working software with an up-to-date version, excellent technical support, when a question arose, the manager promptly responded and helped)
This service is one of the few where an OPCOM-enabled work program is actually available. I did not encounter any of the problems)
Good guys, they explained everything intelligently and helped set up the equipment for personal use. They answered at almost any time of the day or night.