Construction part
For 330-110 kV voltage cable lines protective pipes (2020-12-09 No. 20NU-447)
For 330-110 kV voltage range overhead lines ferroconcrete poles (intermediate towers and towers used with stay rods) (2020-05-15 No. 20NU-153)
For 330-110 kV voltage range overhead lines ferroconcrete poles (angular/anchor towers) (2020-05-15 No. 20NU-152)
For 400-110 kV Transformer substation remote controller box (2019-09-23 No. 19NU-341)
For protective conduits of low-voltage cables (2019-01-09 No. 19NU-5)
For 400-110 kV substation, switchyard equipment and overhead lines hot dip galvanized coatings on fabricated iron and steel articles (2018-08-09 No. 18NU-234)
For conditioners and their fittings equipment (2017-02-08 No. 17NU-29)
For 330-110 kV OHL towers ferroconcrete foundation (2014-11-11 No. 14NU-293)