Dandan He. 2021. Research on the impact of R&D investment on the financial performance of the security industry: A case study of Dahua Company And Hikvision. , Rangsit University;
Dandan He. (2021) Research on the impact of R&D investment on the financial performance of the security industry: A case study of Dahua Company And Hikvision . Rangsit University/Pathum Thani.
Dandan He. Research on the impact of R&D investment on the financial performance of the security industry: A case study of Dahua Company And Hikvision. . Pathum Thani:Rangsit University, 2021.
Dandan He. (2021) Research on the impact of R&D investment on the financial performance of the security industry: A case study of Dahua Company And Hikvision . Rangsit University/Pathum Thani.