SKIET ’ s LiBS production facilities in Jeungpyeong , North Chungcheong Province ( SKIET ) SK Innovation ’ s wholly owned subsidiary SK IE Technology , which makes separators for electric vehicle batteries , said Tuesday it will seek an initial public offering . The separator is one of the four key components of a lithium - ion battery , along with the cathode , anode and electrolyte . According to SKIET , it sent letter of inquiry proposals to domestic and foreign stock firms to underwrite its IPO . “ A specific timeline for the IPO hasn ’ t been decided yet . An underwriter is due to be selected in July , following which the company will decide a specific date depending on the COVID - 19 outbreak , economic situation and the stock market performance , ” a company official said . SKIET ’ s primary business includes lithium - ion battery separators ( LiBS ) and flexible cover windows that can replace glass displays for foldable and flexible smartphones . To meet growing demand , SKIET recently started operations of its 12 th and 13 th production facilities in Jeungpyeong , North Chungcheong Province , increasing its annual production capacity of separators to 530 million square meters from 360 million square meters . After two more production facilities are completed in China in the third quarter this year and in Poland next year , SKIET ’ s total production capacity will reach 1 . 21 billion square meters , the company said .   By Kim Byung - wook ( kbw @ heraldcorp . com ) [ 네이버 에서 코리아 헤럴드 구독 ] ▶ KH Podcast    ▶ KH Video <ⓒ KoreaHerald ( www . koreaherald . com ) 무단 전재 및 재 배포 금지 >