Canon 70D, how to set commercial products with white background?

Look at the example, there is a light and shadow.

A left and a right light, overhead light. Are equipped with soft lampshades.

The light on the left is lower than the light on the right.

The light on the left side is slightly close to the horizontal direct light, and the light on the right side is obliquely incident at an angle of 35-40.

When shooting on a white background, you can add a lamp under the shooting table as appropriate.

PS: We must ensure the brightness of several lamps, otherwise the color temperature is difficult to grasp.