Chinese carmaker BYD’s chip unit’s IPO plan was suspended by the Shenzhen Stock Exchange after China’s securities watchdog investigated a law firm advising the IPO. The China Securities Regulatory Commission launched an investigation into Tian Yuan Law Firm, the advisor, according to a Shenzhen exchange statement on Aug. 18. BYD Semiconductor, China’s largest maker of automotive microcontroller chips, filed the IPO application in May, aiming to raise up to RMB 2.68 billion ($412 million). [Shenzhen Stock Exchange, in Chinese]