The engineering team first constructed the mega size precast unit of roughly the size of five standard swimming pools at an old quarry in Zhuhai.

The engineering team first constructed the mega size precast unit of roughly the size of five standard swimming pools at an old quarry in Zhuhai.

The engineering team first constructed the mega size precast unit of roughly the size of five standard swimming pools at an old quarry in Zhuhai.

The engineering team first constructed the mega size precast unit of roughly the size of five standard swimming pools at an old quarry in Zhuhai.