I would like to create a macro that changes a content of a cell depending on the value inserted.

For example:

If the value '0570651' is entered into cell A1, I would like cell A2 to contain the text '300mm internal diameter concrete strength Class M..."

If the value '0570652' is entered into cell A1, I would like cell A2 to contain the text '300mm internal diameter concrete strength Class P..."

There are numerous values and descriptions, can anyone help?

Thanks in advance.