3-7 working days. Traffic control technology is one of the main equipment suppliers in the field of urban rail transit. The interview time is not long, and the interview will be notified within 3-7 working days after reading the resume. Traffic Management Technology Co., Ltd. was incorporated in Fengtai Branch on February 4, 2009, and its legal representative is Gao Chunhai. The company's business scope includes SMT production line (rail transit train communication control system) and so on.