Sum the values of a specific range of cells

Hi everybody ! I am pleased to be a new member of this group that has helped me so much trough many of my projects.

Here is my problem. I want to do the sum of values in a specific range of cells. In the picture provided, I would like to know the total value of "CAL JAUNE 20 X 50' SP". So I'd need to find all the cells that contain the value "CAL JAUNE 20 X 50' SP" in the B column and do the sum of all the cells in the same row but in the E colum. I'll have to do that with a bunch of other codes. Also the SUM of "CAL JAUNE 20 X 50' SP" has to be in cell A1 of sheet 2, the SUM of "CAL 100' HARM MOKA/6BTE" in cell B1 of sheet 2... The quantity of CAL JAUNE 20 X 50' SP is going to change as they are produce, so that's why I need to identify the cells with this value in it.

Thanks a lot in advance, J !:)

Good afternoon Jeremie,

Are you French? If so, why are you posting in the English section of this forum?

Anyway, can you share your file or a part of it, so that we can help you more easily?

First proposal :