Пластика Резиновая Промышленность / Польша Запросы

I am looking for a producer of pressed elements, like bends, end capd.

I'm looking for a producer of heat pumps, erv units, HVAC residential system. plastic air distribution system for residential ventilation like plastic plenum boxes, plastic air distribution boxes, HDPE ventilation corrugated pipes - flat ducts, and fittings