Hi,

There is field in product form called description for customer by filling this fields the description that we wrote will appear in the website.

If you want to add additional field write the following code.

<template id="product_quick_view_extended" inherit_id="website_sale.product">
    <xpath expr="//t[@t-call='website.layout']" position="inside">
        <xpath>
            You can describe your fields here for eg.
            <span t-field="product.barcode"/>
        </xpath>
    </xpath>
</template>