1. School of Materials and Mineral Resources EngineeringEngineering Campus, Universiti Sains Malaysia 14300, Nibong Tebal Pulau Pinang Malaysia
2. Lumileds Malaysia Sdn. Bhd No. 3, Lintang Bayan Lepas 8, Phase 4, Bayan Lepas Industrial Park, 11900, Pulau Penang Malaysia
3. Penchem Technologies Sdn Bhd 1015 Jln Perindustrian Bukit Minyak7, Kaw Perindustrian Bukit Minyak, 14100 Penang Malaysia