<field name="uom_po_id" ref="product.product_uom_unit"/>
<field name="type">product</field>
<field name="categ_id" ref="product_category_second_hand_equipment"/>
<field name="uom_po_id" ref="product.product_uom_unit"/>
<field name="type">product</field>
<field name="categ_id" ref="product_category_second_hand_equipment"/>