| 1 | Ethane stations: transfer of calcium carbide sludge; | |
| 2 | It was formerly made by the action of water on calcium carbide and is now made from cracking petroleum products. | |
| 3 | Inner Mongolia is China's calcium carbide production, use, sale province. | |
| 4 | This is America, calcium carbide products in China recently for yet another trade remedy cases. | |
| 5 | Calcium carbide, from which he later obtains acetylene, first made by German chemist Friedrich Wohler. |