I think anyone that is in business to make or sell a product or service is considered to have agreed to publish their contact information whatever and whenever. If you want to check with the company first, they might sell only through dealers etc and appreciate publishing the correct contact information.
D2-5J's, D6-9U's, D318 and D333 power units, 12E-99E grader, 922B & 944A wheel loaders, D330C generator set, DW20 water tanker and a bunch of Jersey cows to take care of in my spare time😄