Rail work service Cheng Long Intelligent Construction was founded as a construction firm in 1987. In 1993 it was upgraded to Grade A Construction company. It builds the homes of customers as if it's their own: no stripping material, no wasting, and insistence on quality It's businesses are mainly in the private and public construction sector. In 2017, it was renamed Cheng Long Energy Technology Co., Ltd., with the main businesses shifting to energy conservation, construction, and trade, while establishing a new intelligent energy-efficient green building business unit. Services： Rail welding service Rail grinding service Track-laying service Track alignment services Railway-related human resource service Notable Projects： Railway construction： Ilan Engineering Section Ilan Line. 125M Long steel track welding and loading (phase I) Ilan Engineering Section Ilan Line. 125M Long steel track welding and loading (phase II) Taipei Metro Zhonghe-Xinlu Line, continuous welded rail construction Taipei Metro CH521A Xindian line rail construction Taiwan Railways Administration Mountain Line dual track construction (laying flexible base plate concrete in the Miaoli tunnels) Ministry of Transportation and Communication Taiwan Railways Administration's Port of Taichung Railway Access Improvement Project (Taiwan Trunk Line Zhuifen-Zhanghwa section ballastless anti-vibration track design and construction) Director General of Highways Fourth Maintenance Office Provincial Highway 11 4K+880 - 6K+900 Hualien Bridge and approach construction New North-link Line Heping - Chongde section ballastless anti-vibration track construction Taiwan Railway Mountain Line dual-track construction. Antique car outdoor exhibition space, station, and base construction. Ministry of Transportation and Communication Taiwan Railways Administration Mountain Line dual track construction - AC surface laying and line drawing for outdoor exhibition space for antique cars Taiwan Railways Track Structure Upgrade Project ( CWR swapping project in Taichung construction section and Kaohsiung construction section) Taipei Metro Tamshui Line - Full line measurement and installation of track maintenance reference North Link Line New Wuta Tunnel ballastless anti-vibration track construction EM80 Track Inspection Car Test System upgrade and mechanical component maintenance in cooperation with Mountain Line Dual-track Engineering Office. Taipei Metro CD511 Tucheng Line track construction North Link Line Xinguanyin Tunnel ballastless anti-vibration track construction Taiwan Trunk Line Zhuifen-Zhanghwa section ballastless anti-vibration track construction (interface between ballastless and ballasted track) Taiwan High Speed Rail Airport area trial section - track and materials storage area construction Taiwan Trunk Line Section Nine Ji and Taiwan Railways New Zuoying Station roadbed track construction Taitung Engineering Section 125M Long steel track welding and loading Taiwan High Speed Rail T240 - C 291 roadbed structure construction Taiwan High Speed Rail Radar Trial Taiwan High Speed Rail T 230.T 240 Turnout assembly for the entire line. TST Additional Work (Material supply contract) Taiwan High Speed Rail T 230.T 240 Laying sound absorption rocks along the entire line 50N Rail welding - North Link Line Su'ao No. 1, 2, 3, 4 Tunnel Improvement Project Taiwan Railway Rapid Transit Systemization (Douliu yard improvement project - steel track replacement) Taiwan Railway Rapid Transit Systemization (Douliu yard improvement project - welding ) Taroko National Park Headquarters Provincial Highway No. 8 fence repair and Eternal Spring Shrine walkway fence repair projects Kaohsiung MRT Red Line CR1-CR5 section track-laying project Mitsubishi power tractor rental Zhuobei elevated railway ballasted track construction Kaohsiung MRT Red and Orange line construction project - Orange Line section CD1 track installation Station and permanent track constructions between Xinwudu and Freeway No. 3 Taiwan Railways Track Structure Upgrade Project. Yuli to Tungli station track welding Taiwan Railways Linnei Station welding yard Taiwan Railways Track Structure Upgrade Project. Linnei to Xinyin station track welding Shiniou River bridge, Dahukou river bridge, and Niuchou River bridge track welding projects Track thermite welding in Nansanyue Tunnel between Nankan and Xizhi Taiwan Railways Houbi to Longtien UIC-60 steel track thermite welding project Kaohsiung MRT Orange Line CO1 - CR4 track laying project R11 temporary station track layer cable channel removal Taiwan High Speed Rail grinding operation Taiwan Rail Ilan Line Dongshan Station elevation project 5th tender (earth bank of the main project south of Dongcheng crossing) - Flash butt welding Kaohsiung MRT CD1 Daliao Airport UIC - 60 steel track welding
