diff --git a/app/conf/api.py b/app/conf/api.py
index ad55947..472a8f8 100644
--- a/app/conf/api.py
+++ b/app/conf/api.py
@@ -1,9 +1,15 @@
 from django.urls import path
 
-from search.api.views import SearchApi, HintApi, AutoCompleteApi
+from search.api.views import (
+    SearchApi,
+    HintApi,
+    AutoCompleteApi,
+    IncreaseProductScoreApi,
+)
 
 urlpatterns = [
     path("search", SearchApi.as_view(), name="search_api"),
-    path("hint", HintApi.as_view(), name="hint api"),
-    path('autocomplete_schema', AutoCompleteApi.as_view(), name='autocomplete api')
+    path("hint", HintApi.as_view(), name="hint_api"),
+    path("autocomplete_schema", AutoCompleteApi.as_view(), name="autocomplete_api"),
+    path("score/<int:pk>", IncreaseProductScoreApi.as_view(), name="score_api"),
 ]
diff --git a/app/search/api/serializers.py b/app/search/api/serializers.py
index acc6ac5..e408e3a 100644
--- a/app/search/api/serializers.py
+++ b/app/search/api/serializers.py
@@ -58,7 +58,7 @@ class HintResponseSerializer(serializers.Serializer):
 
 class AutoCompleteRequestSerializer(serializers.Serializer):
     content = serializers.CharField(validators=[MinLengthValidator(3)])
-    exclude = serializers.ListSerializer(child=QueryFilterSerializer())
+    exclude = serializers.ListSerializer(child=QueryFilterSerializer(), default=[])
 
     def create(self, validated_data):
         raise NotImplementedError
diff --git a/app/search/api/views.py b/app/search/api/views.py
index 0b4d574..e450be0 100644
--- a/app/search/api/views.py
+++ b/app/search/api/views.py
@@ -1,6 +1,7 @@
 from drf_yasg import openapi
 from drf_yasg.utils import swagger_auto_schema
 from rest_framework import status
+from rest_framework.generics import get_object_or_404
 from rest_framework.response import Response
 from rest_framework.views import APIView
 from search.api.serializers import HintRequestSerializer
@@ -12,6 +13,7 @@ from search.api.serializers import (
     AutoCompleteRequestSerializer,
     AutoCompleteResponseSerializer,
 )
+from search.models import Product
 from search.services.search import process_search
 from search.services.autocomplete_schema import autocomplete_schema
 
@@ -64,6 +66,28 @@ class AutoCompleteApi(APIView):
         serializer = AutoCompleteRequestSerializer(data=request.data)
         serializer.is_valid(raise_exception=True)
         return Response(
-            {"nodes": autocomplete_schema(serializer.data["content"], serializer.data["exclude"])},
+            {
+                "nodes": autocomplete_schema(
+                    serializer.data["content"], serializer.data["exclude"]
+                )
+            },
             status=status.HTTP_200_OK,
         )
+
+
+class IncreaseProductScoreApi(APIView):
+    @swagger_auto_schema(
+        manual_parameters=[
+            openapi.Parameter(
+                "id",
+                openapi.IN_PATH,
+                description="Product id",
+                type=openapi.TYPE_INTEGER,
+            )
+        ]
+    )
+    def post(self, request, pk):
+        product = get_object_or_404(Product, id=pk)
+        product.score += 1
+        product.save(update_fields=["score"])
+        return Response({"score": product.score}, status=status.HTTP_200_OK)
diff --git a/app/search/models.py b/app/search/models.py
index 55cf53f..329293c 100644
--- a/app/search/models.py
+++ b/app/search/models.py
@@ -18,14 +18,22 @@ class Characteristic(models.Model):
 class UnitCharacteristic(models.Model):
     name = models.TextField("Имя", blank=False)
     value = models.TextField("Значение", blank=False)
-    numeric_value = models.IntegerField(default=0)
+    numeric_value_min = models.IntegerField(default=0)
+    numeric_value_max = models.IntegerField(default=0)
     unit = models.TextField("Размерность", blank=False)
 
     def __str__(self):
         return str(self.name)
 
     def serialize_self(self):
-        return {"name": self.name, "value": self.numeric_value, "unit": self.unit}
+        return {
+            "id": self.id,
+            "name": self.name,
+            "value": self.numeric_value_min
+            if self.numeric_value_min == self.numeric_value_max
+            else f"{self.numeric_value_min}:{self.numeric_value_max}",
+            "unit": self.unit,
+        }
 
     class Meta:
         db_table = "unit_characteristic"
@@ -50,14 +58,16 @@ class Product(models.Model):
         Category, related_name="products", on_delete=models.CASCADE
     )
 
-    # score = models.IntegerField(default=0)
+    score = models.IntegerField(default=0)
 
     def __str__(self):
         return str(self.name)
 
     def serialize_self(self) -> dict:
         return {
+            "id": self.id,
             "name": self.name,
+            "score": self.score,
             "characteristic": [
                 x.characteristic.serialize_self() for x in self.characteristics.all()
             ]
@@ -69,7 +79,7 @@ class Product(models.Model):
 
     class Meta:
         db_table = "product"
-        # ordering = ["score"]
+        ordering = ["-score"]
 
 
 class ProductCharacteristic(models.Model):
diff --git a/app/search/services/autocomplete_schema.py b/app/search/services/autocomplete_schema.py
index d0568ee..f7f003e 100644
--- a/app/search/services/autocomplete_schema.py
+++ b/app/search/services/autocomplete_schema.py
@@ -18,9 +18,9 @@ def autocomplete_schema(val: str, exclude: List[Dict]):
                         "value": product["name"],
                     },
                 }
-                for product in Product.objects.filter(
-                    name__unaccent__icontains=val
-                ).values("name")
+                for product in Product.objects.filter(name__unaccent__icontains=val)[
+                    :20
+                ].values("name")
             ]
         )
     if not category_exclude:
@@ -30,9 +30,9 @@ def autocomplete_schema(val: str, exclude: List[Dict]):
                     "coordinate": cat["name"].lower().index(val.lower()),
                     "value": {"type": "Category", "value": cat["name"]},
                 }
-                for cat in Category.objects.filter(
-                    name__unaccent__icontains=val
-                ).values("name")
+                for cat in Category.objects.filter(name__unaccent__icontains=val)[
+                    :20
+                ].values("name")
             ]
         )
     schema.extend(
@@ -41,9 +41,9 @@ def autocomplete_schema(val: str, exclude: List[Dict]):
                 "coordinate": char["value"].lower().index(val.lower()),
                 "value": {"type": char["name"], "value": char["value"]},
             }
-            for char in Characteristic.objects.filter(
-                value__unaccent__icontains=val
-            ).values("name", "value")
+            for char in Characteristic.objects.filter(value__unaccent__icontains=val)[
+                :20
+            ].values("name", "value")
         ]
     )
     return schema
diff --git a/app/search/services/load_products.py b/app/search/services/load_products.py
index af0c235..192c4d4 100644
--- a/app/search/services/load_products.py
+++ b/app/search/services/load_products.py
@@ -64,12 +64,23 @@ def load_excel():
 
 def process_unit_character():
     for el in UnitCharacteristic.objects.all():
-        nums = re.findall("[-+]?[.]?[\d]+(?:,\d\d\d)*[\.]?\d*(?:[eE][-+]?\d+)?", el.value)
-        if len(nums) != 1:
-            el.delete()
-        else:
+        nums = re.findall(
+            "[-+]?[.]?[\d]+(?:,\d\d\d)*[\.]?\d*(?:[eE][-+]?\d+)?", el.value
+        )
+        if len(nums) == 1:
             try:
-                el.numeric_value = int(float(nums[0].replace(",", ".")))
+                el.numeric_value_min = int(float(nums[0].replace(",", ".")))
+                el.numeric_value_max = int(float(nums[0].replace(",", ".")))
+                el.save()
+            except ValueError:
+                el.delete()
+        elif len(nums):
+            try:
+                nums = [int(float(x.replace(",", "."))) for x in nums]
+                min_num = min(nums)
+                max_num = max(nums)
+                el.numeric_value_min = min_num
+                el.numeric_value_max = max_num
                 el.save()
             except ValueError:
                 el.delete()
diff --git a/app/search/services/search.py b/app/search/services/search.py
index 83c37d7..6d221aa 100644
--- a/app/search/services/search.py
+++ b/app/search/services/search.py
@@ -16,15 +16,26 @@ from search.services.translate import translate_en_ru, translate_ru_en
 
 def process_unit_operation(unit: ProductUnitCharacteristic.objects, operation: str):
     if operation.startswith("<=") or operation.startswith("=<"):
-        return unit.filter(characteristic__numeric_value__lte=int(float(operation[2:])))
+        return unit.filter(
+            characteristic__numeric_value_max__lte=int(float(operation[2:]))
+        )
     elif operation.startswith("=>") or operation.startswith(">="):
-        return unit.filter(characteristic__numeric_value__gte=int(float(operation[2:])))
+        return unit.filter(
+            characteristic__numeric_value_min__gte=int(float(operation[2:]))
+        )
     elif operation.startswith(">"):
-        return unit.filter(characteristic__numeric_value__gt=int(float(operation[1:])))
+        return unit.filter(
+            characteristic__numeric_value_min__gt=int(float(operation[1:]))
+        )
     elif operation.startswith("<"):
-        return unit.filter(characteristic__numeric_value__lt=int(float(operation[1:])))
+        return unit.filter(
+            characteristic__numeric_value_max__lt=int(float(operation[1:]))
+        )
     elif operation.startswith("="):
-        return unit.filter(characteristic__numeric_value=int(float(operation[1:])))
+        return unit.filter(
+            characteristic__numeric_value_min__gte=int(float(operation[1:])),
+            characteristic__numeric_value_max__lte=int(float(operation[1:])),
+        )
     return unit
 
 
@@ -33,7 +44,9 @@ def apply_qs_search(qs: Product.objects, text: str):
         text = text.replace(st, " ")
     text = text.split()
     for word in text:
-        qs = qs.filter(name__unaccent__trigram_similar=word) | qs.filter(name__unaccent__icontains=word)
+        qs = qs.filter(name__unaccent__trigram_similar=word) | qs.filter(
+            name__unaccent__icontains=word
+        )
     return qs