1) Second burning technology 2) Supply warm and clean air for the chicken or pig house 3) Coal as fuel Name:9RFL-20D Air HeaterScope: Used in livestock and Poultry house, greenhouse, heat-supplying system inworkshop, and for drying material.Component: Body of furnace, air inlet, air outlet, furnace gate, ventilator, air blower, chimney.Features:1. It has the advantages of rapid providing of clean ...