ERVING SEAL ENTERPRISES CO., LTD
| TYPE 7L | TYPE 7 |
| TYPE 1 | TYPE Y |
| TYPE 2 | TYPE 210 |
| TYPE 3 | TYPE 502 |
| TYPE 3MD | TYPE G |
| TYPE 5 | TYPE G(size) |
| TYPE L |
| TYPE 8U | TYPE 502 |
| TYPE 550 | TYPE BW |
| TYPE GF | TYPE H9A |
| TYPE H9E | TYPE M7N |
| TYPE 9B | TYPE 11A |
| TYPE 11E | TYPE 13A |
| TYPE 13E |