China's AVIC International Holding Corporation on Wednesday signed a deal with the Chinese aircraft manufacturer Commercial Aircraft Corporation of China (COMAC) to sell 100 ARJ21-700 aircraft in overseas markets. They will work together to sell China's independently-developed regional jet in the international market, according to the agreement signed at Airshow China 2010 being held in Zhuhai City in the southern Guangdong province. The ARJ21-700 jets have completed more than 900 hours of tests during over 400 trial flights since the first trial in November 2008, according to COMAC officials. Tian Min, chief accountant of COMAC, said Monday that the first ARJ21-700 plane is expected to be delivered to customers in 2011. 