| In 1990 |
| Developing YP-90 series baby incubators and HKN-90 baby radiation thermal table. |
| In 1990-1993 |
| Developing YP-930 baby incubator and HKN-93 series baby radiation thermal tables. |
| In 1993-1998 |
| Developing YP-90A series baby incubators and HKN-9010 baby radiation thermal table. |
| In 1998-1999 |
| Developing YP-100 series baby incubators and YP-900 incubator for transport. |
| In 2001 |
| DevelopingTI-2000 incubator for transport. |
| In 2000-2002 |
| Developing YP-2000 baby incubator, HKN-2000 baby radiation thermal table and GX-2000 coronary disease tester. |
| In 2005 |
| Developing NBB-INeonate Blue Bed. |
