Contec airflow is an engineering company that serves the hvac industry.The company also offers validation / testing. They provide systematic documentation. The manufactured product by the company includes filters, dampers, risers, air handling units, grills, diffusers, perforated sheets, laminar airflow benches, hepa boxes etc. Contec airflow pvt. Ltd offers hepa boxes. Hepa boxes are used to prevent any leakage or damage of hepa filters.