HONG KONG, Jan 11 (Reuters) - A group of Chinese investors including China National Chemical Corp (ChemChina) and AGIC Capital agreed on Monday to buy German plastics processing machinery maker KraussMaffei for 925 million euros ($1.01 billion).

The group, which also included Guoxin International Investment Corp, bought the German firm from Canada's Onex Corp , confirming a Reuters report on Jan 7.

The investment was the first for AGIC, a private equity firm founded by former Deutsche Bank top China dealmaker Henry Cai that launched its fund in March 2015.

($1 = 0.9159 euros) (Reporting by Elzio Barreto; Editing by Miral Fahmy)