How can I align the products?

How can I Align products nicely in the form?
I don’t know why, but some of the products are aligned perfectly and others are placed in a strange way on the form. For example the SIENA trays and the STORE Set are not aligned on the left side of the form like all other items: Solicitud de presupuesto de productos para hotel
Who knows how to solve this?
I have 6 forms (all the same, but in a different language) and they all look differently.
Hope to get your help. Thanks.