Professional engineer or technician worker man stand with arm-crossed in front of electric train
Portrait of professional engineer or technician factory worker hold tablet and look to the left
Professional technician hold light stick and discuss to his co-worker to the problem of part train
Close up technician man help to set or fix problem of strap of hardhat of engineer or factory worker
Factory workers man and woman discuss about the project using drawing paper or plan in workplace
Professional technician or engineer try to check and fix the problem part of electric train and work
Portrait of professional engineer or technician workers man and woman look at camera with arm
Vertical image of technician worker or engineer man try to explain the data on paper that he carry
Professional engineer or technician worker man hold walkie talkie and archboard stand in front
Close up professional engineer or technician worker woman hold tablet and use walkie talkie
Professional engineer or technician worker woman hold walkie talkie and look at camera
Professional technician or engineer worker point to the area of the problem to fix for train
Lower view of train factory or professional technician worker check and fix the problem of the train
Professional engineer man point to electric train in the back and discuss with factory worker
Pretty engineer or factory worker woman hold tablet and explain to technician for the process
Train factory workers man and woman that one hold document pad discuss about the project
Technician worker or engineer man try to explain the data on paper that he carry to his co-worker
Two engineer or technician workers man and woman discuss together using drawing paper
Close up professional engineer or technician workers man and woman concentrate to look the data
Professional engineer or technician worker woman check and discuss the problem of parts under train
Close up engineer or technician worker woman hold tablet with green screen and look at it
Professional engineer or technician worker woman check and discuss the problem of parts under trai
Technician or engineer worker point to the area of the problem to fix for electric train and discuss
Profession engineer or technician worker use walkie talkie to contact with co-worker or team staff
Close up professional engineer or factory technician worker man and woman shake hands for success
Back of technician or factory worker woman stand and show action to the driver in electric train
Professional engineer or technician worker man hold walkie talkie and archboard stand in front
Professional technician or engineer worker woman hold tablet and use walkie talkie to point to left
Close up hands of technician or engineer worker record the data about the checking and maintenance
Lower view of train factory or professional technician worker check and fix the problem of train
