South Korean conglomerate Lotte Group plans to list its Malaysian petrochemical unit in the third quarter, company filings show, in an initial public offering that sources say could raise as much as $1.5 billion.

The listing could be one of the biggest IPOs in years in Malaysia, which has not seen any listing of $1 billion and above since the $1.5 billion IPO of Astro Malaysia Holdings in 2012. In a filing on the Korea Exchange, the conglomerate’s unit, Lotte Chemical Corp, said it plans to list subsidiary Lotte Chemical Titan Holding on the Bursa Malaysia stock exchange.

Lotte Chemical said it plans to offer up to 740.48 million shares in its Malaysian unit, with an over-allotment option for up to 55.54 million shares.

It listed the target IPO date as the third quarter of 2017 and said proceeds will be used to build a naphtha cracker in Indonesia and a polypropylene plant in Malaysia, as well as to expand its cracker facility in Malaysia.

The IPO was originally planned for last year but was shelved following revelations of South Korea’s investigations into alleged fraud at Lotte Group.

Maybank Investment Bank Bhd, Credit Suisse and JP Morgan are joint global coordinators on the deal, while CIMB Investment Bank, HSBC and Nomura are joint bookrunners.