Fujita Air Conditioner I Am Considering Buying A Fujita Split System Air Conditioner.?

I am considering buying a fujita split system air conditioner.? - fujita air conditioner

Does anyone know the Manufacturer Open website, you can look for information before buying, as
1. Gas used (some are no longer available to recharge, if necessary)
2. Installation Guide (requires tools that do not - for example, hot, pump, tool ????)
3. Other parts are needed (eg tubes / / gas pipe / plate for the compressor, etc.), but not in price
4. For me it is the installation covered by the warranty?
5. Some do not work when the temperature is too hot or too cold - what is the permissible ambient temperature?