chinese electric car maker nio inc is planning a secondary listing of its american depository receipts in singapore a move to expand its investor base in one of asias financial centers the company has received a conditional eligibilitytolist letter from the singapore exchange nio said friday an introductory document relating to the proposed secondary listing by way of introduction of the shares on the main board of the sgxst is targeted to be issued later this month it said upon listing the shares will be fully fungible with the nyselisted adrs nio and other chinese firms have been identified by the us securities and exchange commission as not able to meet a regulatory requirement relating to auditors the sec has identified these companies under the holding foreign companies accountable act which requires companies to have auditors who can be inspected by the us public company accounting oversight board us regulators are seeking to prohibit trading in securities of companies whose auditors cant be inspected by the pcaob for three years in a row in a statement thursday the ev maker said that it continues to comply with applicable laws and regulations in both china and the us and will strive to maintain its listing status on both the nyse and the hong kong stock exchange