| Artist | : | Concrete electric pole in Africa. How to produce concrete electric poles ? |
| Title | : | Concrete pole machine manufacturer(Jason Yuan) |
| Duration | : | 16 |
| Source | : | Youtube |
| Type of file | : | Audio/Video (.mp3 .mp4) |
| Artist | : | Concrete electric pole in Africa. How to produce concrete electric poles ? |
| Title | : | Concrete pole machine manufacturer(Jason Yuan) |
| Duration | : | 16 |
| Source | : | Youtube |
| Type of file | : | Audio/Video (.mp3 .mp4) |