| 18. | SINDENGEN | NITROGEN PIPE CONNECTION NEW MACHANIC CHANGE INSULATION CHILLER PIPING WORK MACHANIC ROOM |
| 19. | MURAMOTO | WATER SUPPLY CONNECTION MACHANIC & CLEAN DRY AIR |
| 22. | SAHA-UNION SIRACHA | INSTALLATION MACHANIC MODIFY & CHANGE COOLING WATER PIPE REMOVE WATER PUMP CHILLER VACUUM PIPING WORK CLEAN ROOM SYSTEM |
| 23. | THAI KAKKINUMA | PE. PIPING WORK PVC. PIPING WORK |
| 24. | TOMY | MODIFY C/W PIPING WORK REMOVE & REINSTALLATION AHU. |
| 25. | AKT | MODIFY STAINLESS PIPING WORK |
| 27. | MINEBEA LTD. | SPRINKLER SYSTEM AIR COMPRESSOR SYSTEM CDA. SYSTEM CLEAN ROOM SYSTEM |