I bought it at the end of Heisei 20. When opening the packaged goods, "lubricating nozzle set", "hexagonal fitting", "small screw" were insufficient. When I notified the situation by e-mail, it was about contacting the missing parts from the parts list I sent, so I checked the missing parts from the list and contacted and the missing parts also arrived. Finally I started using it at ease 2 months ago today, suddenly the straight fitting from the hexagonal fitting comes off during use and the surroundings, including the employees, are covered with diesel oil and it is very troubling. As a cause, I think that it is caused by shallow light because "small screws" connecting the parts are too short. When sending the missing parts, I did not pack the cardboard but sent it in a bag with parts of vinyl, so the shipper looked worried whether there was any hole in the bag. In my opinion, I felt doubts and uneasiness in correspondence with the products of this manufacturer.