Categoría anterior : 2804 - Hidrógeno, gases nobles y demás elementos no metálicos.
| Nombre de la compañía * | Ciudad / Ciudad-Estado | País |
|---|---|---|
| P********************* | Indonesia | Indonesia |
| I******************************* | Wisconsin | Estados Unidos de América |
| N************************* | Nepal | Nepal |
| Т********************** | Kazakhstan | Kazajstán |
| S*********************************** | Nigeria | Nigeria |
| B*************** | Costa Rica | Costa Rica |
| C******************************** | Philippines | Filipinas |
| D***************** | Rwanda | Ruanda |
| C********************** | Viet Nam | Vietnam |
| L**************************** | Belgium | Bélgica |
| C***************************** | Botswana | Botsuana |
| E**************** | Dominican Republic | República Dominicana |
| T**************** | Ghana | Ghana |
| P*********************** | Maharashtra | India |
| D******************************* | South Korea | Corea (Del Sur) |
| С***************************** | Kazakhstan | Kazajstán |
| A*********************************** | Sri Lanka | Sri Lanka |
| G****************************** | Mexico | México |
| J****************** | Philippines | Filipinas |
| H****************** | Puerto Rico | Puerto Rico |
| 3******** | Rwanda | Ruanda |
| M********************* | SR - Suriname | Surinam |
| Y****************************** | United Kingdom | Reino Unido |
| L********************** | United States | Estados Unidos de América |
| T********** | United States | Estados Unidos de América |
| L**************************** | United States | Estados Unidos de América |