Zhang Yong: Senior economist, senior engineer;

Dong Zhengkui: Senior economist, senior engineer;

Works, papers and major technical reports (the major ones listed):

In 2012, Application and Development of the Core Mold Vibration Technology;

In 2014, Introduction of Large-diameter CNC Automatic Taper Roller Welding Machine and Precast Concrete Square Culvert Pipe;

In 2014, Design of a Hydraulic Pressure Testing Machine for Cement Ducts.

Individual Patents:
1. A bracket device of the automatic taper welding machine for the reinforced skeleton of a concrete drainpipe (Patent for invention 201010099174.3);

2. Wire feeding device for the seam welding machine (Patent for utility model 201220004153.X)

3. Special molds for vertical multi-station radial extrusion pipe making machine(Patent for utility model 201020159416.5);

4. Durable molds for radial extrusion pipe making machine (Patent for utility model 201020159396.1);

5. Multi-station vertical radial tube extrusion pipe making machine (Patent for utility model 201020159285.3);

6. An inward expanding power head of a radial extrusion pipe making machine (Patent for utility model 201020159423.5);

7. Vertical vibrating steel molds for lined pre-stressed steel cylinder concrete pipe (Patent for utility model 201220311383.0);

8. Three-purpose bottom tray for core mold vibration (Patent for utility model 201220311382.6);

9. A closed-circuit circulating cooling system for welding machine (Patent for utility model 201220004146.X);

10. A wheeled electrode for welding machine (Patent for utility model 201220004150.6);

11. High precision steel molds for reinforced concrete pipe (Patent for utility model 201320727494.4);

12. A pipe making machine (Patent for utility model 201320891142.2);

13. Vibrating rod locking device of core mold vibrating pipe making machine (Patent for utility model 201320889525.6);

14. Vibrating rod for core mold vibrating pipe making machine (Patent for utility model 201320891120.6);

15. Methods for the production and installation of reinforced concrete manhole (Patent for utility model 201410092739.X);

Major Awards:

1. The second prize for Science and Technology Progress 2009-2010 in Jiangdu (The complete set of digital production equipment for pre-stressed steel cylinder concrete pipes);

2. The third prize of “Huaxin Cup” Technological Innovation Award 2011 in the national building materials machinery industry (JY1650 radial extrusion pipe making machine);

3. The first prize of the 5th “Haiyuan Cup” Technological Innovation Award 2012 in the national building materials machinery industry (JY1650 radial extrusion pipe making machine);

4. The second prize of the 7th “Jianfeng Cup” Technological Innovation Award 2013 in the national building materials machinery industry (Automatic taper welding machine for special-shaped pipes);

5. The third prize of Yangzhou Science and Technology Award 2013 (Automatic taper welding machine for intelligent special-shaped pipes);

6. The second prize of Science and Technology Progress 2003-2014 in Jiangdu District (Research on key technology of double excitation variable amplitude radial extrusion pipe making process and its complete set of intelligent reconfigurable equipment);

7. The third prize of Yangzhou Science and Technology Award 2015 (Design and industrialization of complete set of intelligent manufacturing equipment of super-large diameter concrete pipes for underground water supply and drainage).