What are the types of electric mahjong machines?

With the continuous improvement of the quality of life, the electric mahjong machine has stepped forward to replace the mahjong player! So what are the types of electric mahjong machines? The general is divided into two categories: folding mahjong machine, table mahjong machine, including roller coaster mahjong machine! Can also be divided into: single mouth machine, four mouth machine, eight mouth machine. Depends on how you sign it. Speed! Now it is generally four machines, eight machines do not need to catch cards, just listed more faults!