| Publisher's name | Date of establishment | Current date | AGE |
|---|---|---|---|
| Jex Max Publication | 1969-12-25 | 2025-12-06 | 55 |
| BPP Publication | 1985-10-01 | 2025-12-06 | 40 |
| New Harrold Publication | 1975-09-05 | 2025-12-06 | 50 |
| Ultra Press Inc. | 1948-07-10 | 2025-12-06 | 77 |
| Mountain Publication | 1975-01-01 | 2025-12-06 | 50 |
| Summer Night Publication | 1990-12-10 | 2025-12-06 | 34 |
| Pieterson Grp. of Publishers | 1950-07-15 | 2025-12-06 | 75 |
| Novel Publisher Ltd. | 2000-01-01 | 2025-12-06 | 25 |