From June 10 to January 5, 2019, IHHA2019 International Heavy Haul Conference was held in Narvik, Norway, attracting about 500 experts and scholars from more than 20 countries. SCLEAD representatives attended the grand meeting and made a report "Research on Heavy-duty Rail Flaw Detection Technology Based on Phased Array Ultrasound" in the special session of "Monitoring and Detection of Rail Head", which gained widely international attention.