diff --git a/copanier/emails.py b/copanier/emails.py
index 3ab9636..9daf9cd 100644
--- a/copanier/emails.py
+++ b/copanier/emails.py
@@ -37,7 +37,7 @@ def send_order(request, env, person, delivery, order):
         env,
         "order_summary",
         person.email,
-        f"{config.SITE_NAME} : résumé de la commande {delivery.producer}",
+        f"{config.SITE_NAME} : résumé de la commande {delivery.name}",
         order=order,
         delivery=delivery,
         request=request
diff --git a/copanier/imports.py b/copanier/imports.py
index 1697e3c..802028d 100644
--- a/copanier/imports.py
+++ b/copanier/imports.py
@@ -24,7 +24,10 @@ def products_from_xlsx(delivery, data):
     delivery.products = []
     for row in rows[1:]:
         raw = {k: v for k, v in dict(zip(headers, row)).items() if v}
-        delivery.products.append(Product(**raw))
+        try:
+            delivery.products.append(Product(**raw))
+        except TypeError as e:
+            raise ValueError(f"Erreur durant l'importation de {raw['ref']}")
     delivery.persist()
 
 
diff --git a/copanier/models.py b/copanier/models.py
index ec6987d..7232ff5 100644
--- a/copanier/models.py
+++ b/copanier/models.py
@@ -96,6 +96,7 @@ class Product(Base):
     url: str = ""
     img: str = ""
     packing: int = None
+    producer: str = ""
 
     def __str__(self):
         out = self.name
@@ -133,9 +134,13 @@ class Order(Base):
         yield from self.products.items()
 
     def total(self, products):
+        def _get_price(ref):
+            product = products.get(ref)
+            return product.price if product else 0
+
         products = {p.ref: p for p in products}
         return round(
-            sum(p.quantity * products[ref].price for ref, p in self.products.items()), 2
+            sum(p.quantity * _get_price(ref) for ref, p in self.products.items()), 2
         )
 
     @property
@@ -153,7 +158,7 @@ class Delivery(Base):
     ADJUSTMENT = 2
     ARCHIVED = 3
 
-    producer: str
+    name: str
     from_date: datetime_field
     to_date: datetime_field
     order_before: datetime_field
@@ -183,6 +188,10 @@ class Delivery(Base):
     def total(self):
         return round(sum(o.total(self.products) for o in self.orders.values()), 2)
 
+    @property
+    def has_multiple_producers(self):
+        return len(set([p.producer for p in self.products])) > 1
+
     @property
     def is_open(self):
         return datetime.now().date() <= self.order_before.date()
@@ -288,3 +297,12 @@ class Delivery(Base):
 
     def has_order(self, person):
         return person.email in self.orders
+
+    def get_products_by(self, producer):
+        return [p for p in self.products if p.producer == producer]
+
+    def total_for_producer(self, producer, person=None):
+        producer_products = [p for p in self.products if p.producer == producer]
+        if person:
+            return self.orders.get(person).total(producer_products)
+        return round(sum(o.total(producer_products) for o in self.orders.values()), 2)
diff --git a/copanier/reports.py b/copanier/reports.py
index deffd35..2d720f0 100644
--- a/copanier/reports.py
+++ b/copanier/reports.py
@@ -41,10 +41,10 @@ def full(delivery):
     wb = Workbook()
     ws = wb.active
     ws.title = f"{delivery.producer} {delivery.from_date.date()}"
-    headers = ["ref", "produit", "prix"] + [e for e in delivery.orders] + ["total"]
+    headers = ["ref", "produit", "prix", "producer"] + [e for e in delivery.orders] + ["total"]
     ws.append(headers)
     for product in delivery.products:
-        row = [product.ref, str(product), product.price]
+        row = [product.ref, str(product), product.price, product.producer]
         for order in delivery.orders.values():
             wanted = order.products.get(product.ref)
             row.append(wanted.quantity if wanted else 0)
diff --git a/copanier/static/app.css b/copanier/static/app.css
index 94aef00..1d66a02 100644
--- a/copanier/static/app.css
+++ b/copanier/static/app.css
@@ -350,6 +350,7 @@ td.total,
 th.total {
   background-color: #bbb;
 }
+
 tr:nth-child(even) {
   background-color: #ddd;
 }
@@ -362,6 +363,15 @@ thead tr * {
 thead th + th {
   border-left: 1px solid white;
 }
+
+tr .producer {
+  border-bottom: 1px solid #aaa;
+}
+
+tr.subtotal {
+  background-color: #bbb;
+}
+
 article.order {
   max-width: 1200px;
   margin-left: auto;
diff --git a/copanier/templates/delivery.html b/copanier/templates/delivery.html
index e8e0e77..085a50d 100644
--- a/copanier/templates/delivery.html
+++ b/copanier/templates/delivery.html
@@ -7,6 +7,9 @@
     <table class="delivery">
         <thead>
             <tr>
+                {% if delivery.has_multiple_producers %}
+                    <th class="producer">Producteur</th>
+                {% endif %}
                 <th class="product">Produit</th>
                 <th class="price">Prix</th>
                 {% if delivery.has_packing %}
@@ -27,6 +30,9 @@
         <tbody>
             {% for product in delivery.products %}
             <tr>
+                {% if delivery.has_multiple_producers and (loop.first or loop.previtem.producer != product.producer) %}
+                    <th class="producer" rowspan="{{ delivery.get_products_by(product.producer) | length }}">{{ product.producer }}</th>
+                {% endif %}
                 <th class="product">{{ product }}</th>
                 <td>{{ product.price | round(2) }} €</td>
                 {% if delivery.has_packing %}
@@ -35,22 +41,39 @@
                 <th{% if delivery.status == delivery.ADJUSTMENT and delivery.product_missing(product) %} class="missing" title="Les commandes individuelles ne correspondent pas aux conditionnements"{% endif %}>
                     {{ delivery.product_wanted(product) }}
                     {% if delivery.status == delivery.ADJUSTMENT and delivery.product_missing(product) %} (−{{ delivery.product_missing(product) }})
-                    {% if request.user.is_staff %}<a href="/livraison/{{ delivery.id }}/ajuster/{{ product.ref }}" class="button" title="ajuster le produit">ajuster</a>{% endif %}
+                        {% if request.user.is_staff %}<a href="/livraison/{{ delivery.id }}/ajuster/{{ product.ref }}" class="button" title="ajuster le produit">ajuster</a>{% endif %}
                     {% endif %}
                 </th>
                 {% for email, order in delivery.orders.items() %}
                     <td title="Commandé: {{ order[product.ref].wanted }} — Ajusté: {{ "%+d"|format(order[product.ref].adjustment) }}">{{ order[product.ref].quantity or "—" }}</td>
                 {% endfor %}
             </tr>
+            {% if delivery.has_multiple_producers and (loop.last or loop.nextitem.producer != product.producer) %}
+            <tr class="subtotal">
+              <td>—</td>
+              <th>Sous Total {{ product.producer }}</th>
+              <td>—</td>
+              {% if delivery.has_packing %}
+                    <td></td>
+                {% endif %}
+              <th>{{ delivery.total_for_producer(product.producer) }} €</th>
+              {% for email in delivery.orders.keys() %}
+              <th>{{ delivery.total_for_producer(product.producer, email) }} €</th>
+              {% endfor %}
+            </tr>
+            {% endif %}
             {% endfor %}
             <tr>
                 <th class="total"><i class="icon-pricetags"></i> Total</th><td>—</td>
+                {% if delivery.has_multiple_producers %}
+                    <td>—</td>
+                {% endif %}
                 {% if delivery.has_packing %}
                     <td>—</td>
                 {% endif %}
                 <th class="total">{{ delivery.total }} €</th>
                 {% for email, order in delivery.orders.items() %}
-                <td>{{ order.total(delivery.products) }} €</td>
+                <td class="total">{{ order.total(delivery.products) }} €</td>
                 {% endfor %}
             </tr>
         </tbody>
diff --git a/copanier/templates/edit_delivery.html b/copanier/templates/edit_delivery.html
index 2955081..2251b0c 100644
--- a/copanier/templates/edit_delivery.html
+++ b/copanier/templates/edit_delivery.html
@@ -8,11 +8,11 @@
 {% endif %}
 <form method="post">
     <label>
-        <p>Producteur</p>
-        <input type="text" name="producer" value="{{ delivery.producer or '' }}" required>
+        <p>Nom</p>
+        <input type="text" name="name" value="{{ delivery.name or '' }}">
     </label>
     <label>
-        <p>Description des produits</p>
+        <h5>Description des produits</h5>
         <input type="text" name="description" value="{{ delivery.description or '' }}">
     </label>
     <label>
diff --git a/copanier/templates/includes/modal_import_products.html b/copanier/templates/includes/modal_import_products.html
index ca2f0cc..805788e 100644
--- a/copanier/templates/includes/modal_import_products.html
+++ b/copanier/templates/includes/modal_import_products.html
@@ -15,6 +15,8 @@
         <dd>Prix d'une unité, en euros.</dd>
         <dt>unit</dt>
         <dd>Conditionnement d'une unité: 1kg, 33cl…</dd>
+        <dt>producer</dt>
+        <dd>Le nom du producteur</dd>
         <dt>description</dt>
         <dd>Plus de détails sur le produit.</dd>
         <dt>packing</dt>
diff --git a/copanier/templates/place_order.html b/copanier/templates/place_order.html
index 8c0d84c..6dc1cb8 100644
--- a/copanier/templates/place_order.html
+++ b/copanier/templates/place_order.html
@@ -2,38 +2,46 @@
 
 {% block body %}
 <article class="order">
-<h3><a href="/livraison/{{ delivery.id }}">{{ delivery.producer }}</a> — Commande de «{{ person.email }}»</h3>
+<h3>{% if delivery.producer %}<a href="/livraison/{{ delivery.id }}">{{ delivery.producer }}</a> — {% endif %}Commande de « {{ person.email }} »</h3>
 {% include "includes/delivery_head.html" %}
 <form method="post">
     <table class="order">
         <thead>
         <tr>
+            {% if delivery.has_multiple_producers %}
+                <th class="producer">Producteur</th>
+            {% endif %}
             <th class="product">Produit</th>
             <th class="price">Prix</th>
             {% if delivery.has_packing %}
                 <th class="packing">Conditionnement</th>
             {% endif %}
             <th class="amount">Commande</th>
-            {% if delivery.status == delivery.ADJUSTMENT or order.has_adjustments %}<th class="amount">Ajustement +/−</th>{% endif %}
+            {% if delivery.status == delivery.ADJUSTMENT or order.has_adjustments %}
+                <th class="amount">Ajustement +/−</th>
+            {% endif %}
         </tr>
         </thead>
         <tbody>
         {% for product in delivery.products %}
         <tr>
+            {% if delivery.has_multiple_producers and (loop.first or loop.previtem.producer != product.producer) %}
+              <th class="producer" rowspan="{{ delivery.get_products_by(product.producer) | length }}">{{ product.producer }}</th>
+            {% endif %}
             <th class="product">{{ product }}
                 {% if product.description or product.img %}
                     {% with unique_id=loop.index %}
                         {% include "includes/modal_product.html" %}
                     {% endwith %}
-                {% endif %}</p>
+                {% endif %}
             </th>
             <td>{{ product.price | round(2) }} €</td>
             {% if delivery.has_packing %}
-                <td{% if delivery.status == delivery.ADJUSTMENT and delivery.product_missing(product) %} class="missing" title="Les commandes individuelles ne correspondent pas aux conditionnements"{% endif %}>{{ product.packing or "—" }}{% if delivery.status == delivery.ADJUSTMENT and delivery.product_missing(product) %} (−{{ delivery.product_missing(product) }}){% endif %}</td>
+                <td {% if delivery.status == delivery.ADJUSTMENT and delivery.product_missing(product) %} class="missing" title="Les commandes individuelles ne correspondent pas aux conditionnements"{% endif %}>{{ product.packing or "—" }}{% if delivery.status == delivery.ADJUSTMENT and delivery.product_missing(product) %} (−{{ delivery.product_missing(product) }}){% endif %}</td>
             {% endif %}
             <td class="with-input"><input {% if delivery.status != delivery.OPEN %}type="text" readonly{% else%}type="number"{% endif%} min=0 name="wanted:{{ product.ref }}" value="{{ order[product].wanted }}"></td>
             {% if delivery.status == delivery.ADJUSTMENT or order.has_adjustments %}
-            <td class="with-input"><input type="number" name="adjustment:{{ product.ref }}" value="{{ order[product].adjustment }}" {% if not delivery.product_missing(product) %}readonly{% endif %}></td>
+                <td class="with-input"><input type="number" name="adjustment:{{ product.ref }}" value="{{ order[product].adjustment }}" {% if not delivery.product_missing(product) %}readonly{% endif %}></td>
             {% endif %}
         </tr>
         {% endfor %}