Being in the list of Top 10 Personal Coolers Manufacturer & Suppliers. One of the best brands to pick from for a portable, efficient cooler is Belton Coolers. They offer easily assembled personal coolers that are portable. Because of their small size, they may be used to chill most areas of your home, including your study table, bedroom, and balcony. An adjustable airflow feature allows one to adapt the airflow to their needs. One of the Best Air Coolers Manufacturer in India is Belton Coolers.