(1) “Progress in MgCl2-supported TiCl4 Catalyst & Future Direction of Olefin Polymerization Catalysts”, FlexPO 2007 in Bangkok, Thailand.

(2) “Application of PO Catalyst & PO Process”, INTERNATIONAL PETROCHEM CONFERENCE 2008 in Mumbai, India.

(3) “Sustainable Development of Polyolefin Catalysts”, Interfaces ’08 in Sopron, Hungary.

(4) “Sustainable Development of Polyolefin Catalysts”, FlexPO 2009 in Seoul, Korea.

(5) “Progress and Future of HDPE Technology”, 21st Refinery Technology Meet (2017) in Visakhapatnam, India.

(6) “Sustainable Development in Polyolefin Industry”, 22nd Refining & Petrochemicals Technology Meet (2018) in Bhubaneswar, India.