In January of 2003, two CAT3512 engines of Tuha Oilfield had broken down and the production there were severely affected. Jereh won this repairing at reasonable price and better service records. Jereh Company sent out engineers and purchased the needed parts for Tuha Oilfield at a short time, completed repairing in time. At present, these two CAT engines have been put into use and works well. Jereh Company regards customer's need as her own needs and will like to provide better service to customers in time.