^ CMIIW, but I don't think PPTV have their own station-produced dramas. For instance, their currently-airing one starring Pock, Smart and Beam is produced by Change2561. I think this one is produced by a company affiliated to GMM (just like Change2561), hence they were able to have both Push and Son in it.
But I've read an article about PPTV is having issues in terms of their dramas not doing well in the ratings and some production delays too, so I won't be surprised if the production company will decide to air this in another channel later on, say One31.