May 25th, 2012, Doosan Infracore Construction Equipment (Shandong) Co., Ltd. (DISD) held a grand ceremony for celebrating the brand new product- DL501/502 Proto loader rolling off the production line. General Manager Kang Yougui, Vice General Manager Ju Yingshu, directors of R&D department and business department, all the staff, and people from all over the country to attend WLO, totally over 300 people, jointly witnessed the exciting moment.

Carrying on the previous models’ features of high reliability, high comfort, high efficiency, and low consumption, low noise, and low oil temperature, the new model gets improvement on environmental protection and low energy consumption and features new cab design with better vision and comfort.