This machine is suitable for spray cooling of PET bottles after hot-filling, and can also be used for warm bottles after filling of gas-containing beverages. The world famous INTRALOX polypropylene mesh belt is adopted, which has an excellent industrial quality, meets the requirements of food hygiene, and is durable with less maintenance workload. There are four temperature zones: heating, heat preservation, pre-cooling and cooling. As per the process requirements, the temperature of heating, insulation and pre-cooling sections can be accurately controlled by PID controlling pneumatic membrane regulating valve, and the time of heat preservation and sterilization can be adjusted by frequency conversion speed regulation.