| General Inquiry | : | gtc@grandtechcreation.com |
| Job Inquiry | : | job@grandtechcreation.com |
| Sales | : | sales@grandtechcreation.com |
| Komplain | : | komplain@grandtechcreation.com |
| : | @grandtechcreation | |
| : | @parulianprodukpresisi | |
| : | @gtc_id | |
| Telegram | : | @grandtechcreation |
| Telepon | : | + 62 8978 388 911 |
| Zoom | : | 513 419 6227 |
For Sustainable Person | For No Mercy Person | Support | Kontak | Berlangganan | ServicePT. Parulian Produk Presisi. NPWP : 95.459.111.4-711.000 |