l10n_it_withholding_tax/views/product.xml
<?xml version="1.0" encoding="utf-8"?>
<openerp>
<data>
<record model="ir.ui.view" id="view_product_template_withholding_exclude_form">
<field name="name">view.product.template.withholding.exclude.form</field>
<field name="model">product.template</field>
<field name="inherit_id" ref="account.product_template_form_view"/>
<field name="arch" type="xml">
<xpath expr="//field[@name='taxes_id']" position="after">
<field name="withholding_tax_exclude"/>
</xpath>
</field>
</record>
</data>
</openerp>