oo_nan_prodlot_sample_library/product_view.xml

<?xml version="1.0" encoding="utf-8"?>
<openerp>
    <data>
        <!-- product.product -->
        <record id="product_prodlot_sample_library_form" model="ir.ui.view">
            <field name="name">product.prodlot.sample_library.form</field>
            <field name="model">product.product</field>
            <field name="type">form</field>
            <field name="inherit_id" ref="nan_prodlot_quality_control.product_prodlot_qc_form" />
            <field name="arch" type="xml">
                <field name="qc_template_trigger_ids" position="after">
                    <field name="requires_sample_library"/>
                </field>
            </field>
        </record>
    </data>
</openerp>