Blow-Tech Engineers manufactures Grills and Hose Duct Ventilation System. Blow-Tech Engineers offers industrial air pollution control equipment and ventilation systems. The Grills and Hose Duct Ventilation System are designed for ventilating systems for central air purification to significantly reduce pollutants and contaminants in homes, office and other commercial places. These exhaust systems are usually used to guide waste exhaust gases away from a controlled combustion inside an engine or stove. These Grills and Hose Duct Ventilation Systems require less maintenance and have long working life.