Categoría anterior : 2804 - Hidrógeno, gases nobles y demás elementos no metálicos.
| Nombre de la compañía * | Ciudad / Ciudad-Estado | País |
|---|---|---|
| N****************** | Bangladesh | Bangladesh |
| N*************************** | India | India |
| M************************************* | Guerrero - Tamaulipas | México |
| A************************************ | Egypt | Egipto |
| Z************ | India | India |
| U************************************* | Pakistan | Pakistán |
| L************* | Guayaquil | Ecuador |
| C******************** | Egypt | Egipto |
| S******************** | KOLKATA, W.B. | India |
| P****************************** | PK - Pakistan | Pakistán |
| A**************************** | Pennsylvania | Estados Unidos de América |
| P***************** | Bangladesh | Bangladesh |
| K**************************** | São Paulo | Brasil |
| C********************* | Colombia | Colombia |
| B************* | Mumbai,Maharashtra | India |
| G**************************** | India | India |
| S******************************** | India | India |
| M************* | Lesotho | Lesoto |
| D********************** | Namibia | Namibia |
| S******************************** | Nepal | Nepal |
| A****************** | Peru | Perú |
| I********************* | Pakistan | Pakistán |
| S************************************************* | Poland | Polonia |
| N************************** | United States | Estados Unidos de América |
| Y********************** | Us - United States | Estados Unidos de América |
| C************** | Us - United States | Estados Unidos de América |
| S************* | Texas | Estados Unidos de América |
| N*************** | Us - California | Estados Unidos de América |
| A********** | Us - Texas | Estados Unidos de América |