Variable High Frequency Power Supply

[Ethnan]

Does anyone know where I can get any of these inverter power supplies for use in Electrical/Electronic laboratory?
1. Power :1KVA
Wave Type: pure sine wave or modified sine wave:
Voltage Output:220V
Frequency range: 5Khz to 1Mhz


2. Power :2KVA
Wave Type: pure sine wave or modified sine wave:
Voltage Output:220V
Frequency range: 5Khz to 1Mhz


5. Power :5KVA
Wave Type: pure sine wave or modified sine wave:
Voltage Output:220V
Frequency range: 5Khz to 1Mhz