On-spot criminal psychology refers to the psychological signs left in the brain while the offender is committing crime,which includes a great deal of information,some of which can be obtained by on-spot investigation,but more can not,especially the material spot,such as the process of offense and the details of offense.

It is important that control of quality in site,in the construction of rollcrete.

Construction companies should ensure the JIT of both supply logistics and site logistics in order to improve the efficiency of physical distribution,and the hoist work is the key tache for the realization of the site JIT physical distribution,especially for the high-rise buildings.