久久艹免费视频,久艹久艹,操逼视频二三区,伦理老熟女7777

Frame boby internal operations to ensure that construction workers safer.Overall integrated all steel,fully galvanized steel perforated metal mesh outer ciosed,

Correcting each installation,eac reeor in thid layer todigest,will not lead to the accumula- tion of errors passed on.

Template overall rise together,has been the ceiling without landing,except for the first installa- tion and removal of the top layer,the middle without crane ha

The operating parts are equipped operating platform,from the template removal,cleaning,steelbanding,concee pouring is very convenient.

Since the template as awhole,to prevent the overall offset,concrete appearance and good quality.