Precision Casting,Casting,Valve Gaomi Gongji Precise Metal Co., Ltd , http://www.preccastings.com In 1939, Comrade Fan Chaolai was born in a peasant family in Jiangsu: due to his poor family, he did not have the opportunity to study in regular schools until after liberation. After graduating from Dalian Railway Institute in 1963, he was assigned to Changchun Locomotive Works. He is currently working at Changchun Institute of Optics and Mechanics. Associate researcher. He invented the fast clamping universal vise, commonly known as Fan's vise, which can greatly reduce the labor intensity of workers and improve work efficiency, which has aroused the praise of domestic and foreign experts.