No.2, Lianjiang South Road, Shuangjiang. Baidu map shows that the excavator certificate is registered in the Safety Supervision Bureau. Eshan Yi Autonomous County Safety Production Supervision and Management Bureau is located at No.2 Lianjiang South Road, Shuangjiang. The excavator license is not a driver's license, but an operation license. Issued by the labor department or the agricultural machinery department, you can go to the institution that issued the operation certificate for annual review.