⭐︎Please read the profile⭐︎ ⭐︎Instant purchase welcome⭐︎ ⭐︎Price negotiations are welcome! Feel free to comment!⭐︎ ⇩Many other items are also available⇩ #Re: No outer packaging, unknown usage history Personal Cooler Air Device Cool Vest Personal Cooler Connect to Compressor Only Water-Oil Separation Easy Operation Welding Work Heatstroke Prevention [Imported] About this product Industrial compressed air filter: The vortex tube of the cooling vest does not use electricity or chemical refrigerants, only industrial compressed air is filtered. Outlet temperature: Manual knob and adjustable air outlet temperature thermometer only. If the inlet pressure and temperature of the compressed air are constant, the outlet temperature of the vortex tube will be continuously maintained at ±1°F (±0.6°C). Safe to use: The vortex tube of the cooling vest has no risk of sparking and no radio or radio frequency interference. Wide range of applications: Suitable for high temperature, high heat, and high humidity, especially suitable for low-temperature labor protection environments. Metallurgy, forging, welding, glass, fire protection, oil, power plants, boiler factories, sandblasting, paint baking, etc. 【Easy operation】The air duct of the air conditioning vest opens and closes immediately, making it easy to control and cool without waste. 【Product Notes】 ※In the unlikely event of a problem, please contact us [before evaluation]! ! !※ (We cannot respond if you contact us after evaluation) ・Regarding accessories, we have checked as much as possible, but everything in the image is included. Please be sure to check the image before purchasing and make a decision. ・No pets, no smoking. 【Shipping and other notes】 ・Shipping will be done within 2-4 business days after confirmation of payment. (We cannot respond on weekends and holidays. Please understand.) ・Since we are also selling on other sites, if the item is out of stock, we are very sorry, but it will be canceled at the seller's convenience. ・To provide at a low price, we pack to reduce shipping costs, so some products may be compressed for shipping. (If you wish to have non-compressed packaging, please comment before purchasing. In that case, the price will be increased by the shipping cost.) Product number #Re:bs1027 #Re: