Hi-Tech Equipments - Exporter of Bottle Cooling Tower Most bottle-type cooling towers operate on the principle of induced draft counterflow. This means air is drawn upwards through the tower by a fan, moving in the opposite direction to the downward flow of water. Exporter of Bottle Cooling Tower across Indonesia Exporter of Bottle Cooling Tower across Singapore Exporter of Bottle Cooling Tower across Malaysia Exporter of Bottle Cooling Tower across Thailand Exporter of Bottle Cooling Tower across Korea