PTR Baler & Compactor is proud to service Boston and the surrounding area. Our clients in Massachusetts rely on us or their waste management needs. We sell and service vertical balers, waste compactors and rebuilt vertical balers. Boston is the capital city of the state of Massachusetts, and it is the most populated city in the New England region of the United States. It’s one of the oldest cities in the country, and it was a key city during the American Revolution.