how to buy dust extractor for floor grinder

Firstly you need to confirm the local voltage and floor grinder power you are using, Voltage can be 110v, 220v, 380v, 450v, the power usually 1kw, 2kw,3kw,4kw,5.5kw,7.5kw,8.6kw and bigger, all vacuum cleaner are specially designed for floor grinding industry with longopac bag system for fast and easy handle and transport dust, so it must be used for dry not wet, if you want to collect water and wet material, you have wet dry vacuum cleaner for your choice.  "Toray" polyester PTFE coated HEPA filter can trap 99.99% of particles 0.3 microns. The cleaning dust way can be manual jet pulse and automatic motor flake filter cleaning. All vacuums can connect pre separator to prolong vacuum working time and protect filters and extend lifetime.