The global halal industry is likely to grow to between three and four trillion US dollars in the next five years, from the current estimated two trillion, backed by a continued demand from both Muslims and non-Muslims for halal products. Realising the importance of the halal industry to the global community, the Academy of Contemporary Islamic Studies (ACIS), the Universiti Teknologi MARA Malaysia (UiTM) and Sultan Sharif Ali Islamic University (UNISSA) Brunei have organised the 4th International Halal Conference (INHAC) 2019 under the theme "Enhancing Halal Sustainability'. This book contains selected papers presented at INHAC 2019. It addresses halal-related issues that are applicable to various industries and explores a variety of contemporary and emerging issues. It covers aspects of halal food safety, related services such as tourism and hospitality, the halal industry - including aspects of business ethics, policies and practices, quality assurance, compliance and Shariah governance Issues, as well as halal research and educational development. Highlighting findings from both scientific and social research studies, it enhances the discussion on the halal industry (both in Malaysia and internationally), and serves as an invitation to engage in more advanced research on the global halal industry.

Nur Nafhatun Md Shariff obtained her first degree from the Academy of Islamic Studies majoring in Islamic Astronomy. She completed a Masters and then PhD in the Faculty of Science. She tutored in the Department of Fiqh & Usul at the Academy of Islamic Studies, and was a fellow in the Department of Science and Technology Studies at the University of Malaya. She worked at Universiti Teknologi MARA (UiTM), Shah Alam in 2014. She currently holds several positions as a Research Management Unit (RMU) coordinator, Malaysian Research Assessment (MyRA) liaison officer, and was also recently a liaison officer in the Office of International Affairs (OIA). She is on the editorial board for the Astronomy Education Journal under the International Astronomical Union (IAU) and is a member of the Malaysian Islamic Astronomy Society. She is an associate fellow at the Institute of Science (IOS) and the Islamic Astronomy and Solar Astrophysics (IASA) Research Interest Group (RIG). Recently is also a member of the International Astronomical Union (IAU). Zeiad Amjad Abdulrazzak Aghwan is a lecturer in the Halalan Thayyiban Research Centre at Universiti Islam Sultan Sharif Ali, Negara Brunei Darussalam. He obtained his first degree in the Department of Animal Science at the University of Mosul, Iraq, majoring in Animal Production, where he also obtained his Master's. He completed his PhD at Universiti Putra Malaysia (UPM), after which he was appointed as a postdoctoral researcher in the Halal Products Research Institute at UPM. He is a member of the Association of Agricultural Engineers/Mosul/Iraq, the Association of University Lecturers/Mosul/Iraq, the Azka Halal Group, and the Malaysian Society of Animal Production (MSAP). He was also on the advisory board of the Malaysian Journal of Halal Research. He is head of both the postgraduate and undergraduate students program, and supervises Master's and PhD students in the Halalan Thayyiban Research Centre at Universiti Islam Sultan Sharif Ali, Negara Brunei Darussalam. Tomizawa Hisao obtained his PhD in Cultural Anthropology (2002), a Master of Sociology (1980), and a Bachelor of Liberal Arts and Sciences (1978) at University of Tokyo, respectively. He is currently Professor and Dean of the Graduate School of International Relations at University of Shizuoka, Japan. He is the first President of the Japan Society for Halal Science and Technology (JAHAS). He was Vice President, University of Shizuoka (2011-13) and President of the Japan Association for Malaysian Studies (2014-16). His main field of study is Malay Muslim society in and around Malaysia, and Southeast Asia more broadly. He has been engaged in research on the Halal industry since 2007, conducting fieldwork in Southeast Asia, MENA, East Asia, and South Asia. Norliza Binti Dato Haji Mahalle is a lecturer at the Sultan Sharif Ali Islamic University (UNISSA) Brunei Darussalam. She obtained her first degree in Business Administration from the Kulliyah of Economics and Management Sciences, International Islamic University, Malaysia (IIUM). She obtained her Master of Business Administration (MBA) degree at the Faculty of Business, Economics and Policy Studies, University Brunei Darussalam (UBD). After her MBA in 2003, she started her career as an Economic Officer at the Ministry of Industry and Primary Resources, Brunei Darussalam. She authored the Blueprint for SME Development in Brunei Darussalam for the Promotion and Entrepreneurship Development Division of the Ministry. She had experience coordinating and monitoring various projects, including the Brunei Halal Project at the Ministry. She joined the university in 2011 as a lecturer at the Faculty of Business and Management Sciences. As a lecturer, she was also appointed various administrative posts including Industrial Attachment Coordinator for the Faculty, Deputy Dean of Faculty of Business and Management Sciences (FBMS) and