Source: copyright of China Construction Third Engineering Bureau and Baidu Library belongs to the original author ~ ~ ~ unfinished materials.

750 super full construction animation (commonly used in highway, civil engineering, underground tunnel, foundation pile foundation,

Five risks+lunch! Trainee construction worker! Shanxi Shuntian Fire Engineering Co., Ltd! Turn it to the people around!

Building civilized construction and safety management standardization atlas! Attached 118 pages of word original download!
