mix mixing station identification card shall meet the following requirements

(1) Concrete mixing plant concrete mix signage should be hung prominently in the operating room before, unified specifications. Signage production and installation should comply with "safe and civilized railway construction project
site sign" - Iron know 16 requirements. (2) identification card shall include design and construction of concrete mix, time, concrete block making machine and measured water content, the amount of each plate of various materials, slump and so on.