Small companies with unstable network resources usually win consumers by flaunting "high network speed and low price" The usual practice is to take "the more you buy, the cheaper it is" as a means of promotion, that is, to break the previous half-year or one-year purchase cycle of broadband companies and increase it to two or three years, so you should be extra careful when buying.
The safest way is to go to the regular business department instead of trusting the stall at the door easily. Because of its unknown situation, it is difficult to guarantee the quality of users. "The consultant warned.