The Hinomaru and the Mexican national flag flutter outside the Monclova, Mexico, plant of Takata Corp., the world's second-largest supplier of air bags and seatbelts, in April 2013. Manufacturing problems with Takata Corp. air bags go beyond what the Tokyo-based company has disclosed to U.S. safety regulators about why the devices are at risk of exploding with dangerous force, according to internal company documents reviewed by Reuters.