Underground passage lightbox
| No. | Num | Size | Position | Price | Production fee |
|---|---|---|---|---|---|
| Underground passage lightbox | 20 | 4.5m×1.8m | underground passage | 240000 yuan/lightbox/year | 300 yuan/㎡ |
| No. | Underground passage lightbox |
|---|---|
| Num | 20 |
| Size | 4.5m×1.8m |
| Position | underground passage |
| Price | 240000 yuan/lightbox/year |
| Production fee | 300 yuan/㎡ |
