Liu Lie is a service engineer of Sany Heavy Equipment.，At present, he is mainly responsible for the after-sales service of customers in Yunnan, Guizhou and Sichuan.。Since joining Trinity in March 2012，He has been serving on the front line for 12 years.。

April 15 at 7 p.m.，Liu Lie received a report from Weixin Coal Mine in Luzhou City, Sichuan Province.“One key summons”Order，He had just finished his day's work.，There are no concerns，He immediately drove to Weixin Coal Mine.。It was late at night when we arrived at the mine.，Liu Lie immediately went down the well and began to clear the equipment failure.，Finished cleanly in the early morning of April 16.，Resume production。

After a whole night of rush repairs.，Liu Lie is preparing to have breakfast and rest for a while after lifting the well.，It's on the phone“One key summons”The prompt sounded again。He immediately set off for Sichuan Coal Xuyong No.1 Mine, 16 kilometers away.。

After arriving at Xuyong No.1 Mine，Liu Lie immediately changed his clothes and went down the well to check the cause of the failure.，“ Don't worry ，Not a big deal.。”He reassured his clients.，Replace the bushing fitting on one side，Be methodical。Three hours later.，The replacement of accessories is completed，The roadheader resumed normal operation.。

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On the afternoon of the 16th，Liu Lie, who has been busy for 20 hours, has not yet had a rest.，On the phone screen.“One key summons“The order is on again.。Made a simple rest and preparation.，Liu Lie set off again.。This time, it was the Sichuan Coal Xinwei Coal Company, 160 kilometers away.，It takes three hours by car.。

Through communication and confirmation with mine personnel，Liu Lie judges this one.EBZ160 Swing bearing damage has occurred。Because the people in the mine are not familiar with the equipment.，The equipment cannot be disassembled，Can onlyUrgent callSANY Service Engineer Handling。In order to ensure the smooth production of the mine,，Liu Lie decisively went down the well with the staff of the mechanical and electrical department of Xinwei Coal Industry to carry out emergency repairs.，He was busy until three o'clock in the afternoon on the 17th.。  

“Thank you so much.，Come quickly、The repair is accurate！”The customer said，SANY service engineers are hard-working.、Service was prompt，It can accurately judge the fault point.，Always think of the customer first.、Consider for the mine，Serious and responsible.。

42 hours，Two cities，Three coal mines，Liu Lie can finally have a good rest.。As a first-line service engineer in the region，Most of the coal mines he serves are located at the junction of Yunnan, Guizhou and Sichuan.，The terrain is complex、The mountain road is rugged，The weather is changeable，Liu Lie's daily work is to go back and forth between these mountains.，Solve problems for customers at the first time。

“One key summons“It is an online service mode specially created by Sany Heavy Equipment for customers.，The customer is on the mobile phoneAPPClick on“One key summons”Button，You can call the SANY service engineer to serve in the mine.，And in accordance with the 121standard.——That is, a quarter of an hour、Arrive in 2 hours、Deal with the problem within 1 day。