* Perform more complex machine installation, tool relocation, maintenance, upgrade and modification, response quality related issues to maintain the normal operation of the machine and completed the machine as soon as possible. * Independent solution to complex customer complaints containing machine problems, and to guide and support the shallow and new colleagues, to enhance the team's professional ability. * Advocate advanced proposals to improve work quality, efficiency and cost reduction. * Write all kinds of technique documents and reports to provide follow-up machine maintenance reference and knowledge transfer.