求翻译：我们进行了厂房钢结构和围护结构的安装，在兰州现场主要协助项目经理，对材料，竣工资料，现场吊装等事宜进行管理。是什么意思？

We have carried out the installation of the plant steel structure and building envelope, the scene in Lanzhou mainly to assist the project manager, materials, and completion data, the scene hoisting matters relating to management.

We have had a plant of steel construction and installation, the structure of the site in Maryland, primarily to assist project managers in materials, construction materials, such as lifting, on-site management issues.

We have carried on the workshop steel structure and the surrounding protection structure installment, in Lanzhou scene main assistance project manager, to the material, completion material, matters concerned and so on scene hoisting carries on the management.

We have factory installation of steel structures and building envelope, primarily to assist the project manager in Lanzhou, materials, completion data, manage on-site matters such as lifting.

正在翻译，请等待...