If working at the factory Actual performance, it may be difficult for the engineer, because everyone will need to have routine care long and otherwise continue to repair.
If working in actual practice it may be difficult for the technician. Because everyone must have a routine care. , and also takes longer contiguous to repair.
If you work at a factory. actual performance, it may be hard for technicians. Because everybody has to have a routine care and it takes a long time continuous to repair it.