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①

1、small digital pressure welder (1st generation)
2、parameter acquirement and quality management system of digital pressure welder  (1st generation)
3、digital rail flame normalizing device (1st generation)

Chengdu Heavy Reparation Section

Chengyu Line PD360Kg/m

2001～2005

②

1、parameter acquirement and quality management system of digital pressure welder (1st generation)
2、small digital pressure welder (2nd generation)
3、digital rail flame normalizing device (1st generation)

China Railway 1st Group Co.,Ltd.

Qingzang Line

U71Mn 50、60Kg/m

2004～2005

③

1、parameter acquirement and quality management system of digital pressure welder (1st generation)

Hangzhou Heavy Reparation Section

Zhegan line 60Kg/m

2004～2005

④

1、parameter acquirement and quality management system of digital pressure welder (2nd generation)

China Railway 1st Group Co.,Ltd.

Shuohuang U75V 75Kg/m

2005～2006

⑤

1、small digital pressure welder (3rd generation)
2、digital rail flame normalizing device (1st generation)
3、parameter acquirement and quality management system of digital pressure welder (2nd generation)

China Railway 1st Group Co.,Ltd.

Shanghai Subway 9th Line60Kg/m

2005～2006

⑥

1、digital rail flame normalizing device (1st generation)
2、parameter acquirement and quality management system of digital pressure welder (2nd generation)
3、small digital pressure welder (4th generation)

China Railway 1st Group Co.,Ltd.

Kunzhan Line 60Kg/m

2005～2006

⑦

1、small digital pressure welder (4th generation)
2、parameter acquirement and quality management system of digital pressure welder (2nd generation)
3、digital rail flame normalizing device (1st generation)

 China Railway 4th Group Co.,Ltd.

Xige Line60Kg/m

2006～2007

⑧

1、small digital pressure welder (4th generation)
2、parameter acquirement and quality management system of digital pressure welder (2nd generation)
3、digital rail flame normalizing device (1st generation)

China Railway 21st Group Co.,Ltd.

Lanzhou60Kg/m

2006～2007

⑨

1、small digital pressure welder (4th generation)
2、parameter acquirement and quality management system of digital pressure welder (2nd generation)
3、digital rail flame normalizing device (1st generation)

China Railway 1st Group Co.,Ltd.

Jingui Railway60Kg/m

2006～2007