If the management team comes from China, then it would make sense for such a request “Mandarin Speaker.” In another scenario there are also Chinese Malaysian management still not fluent in Bahasa Melayu or fully understand business terms or conversations in English, especially the older generation, like those 50-60 y/old and above, usually are SME businesses owners. But management teams younger than that generally have a better understanding of Malay and English. They don't bother much.