diff --git a/app/Models/Plant.php b/app/Models/Plant.php
index 2017230..96de552 100644
--- a/app/Models/Plant.php
+++ b/app/Models/Plant.php
@@ -238,4 +238,9 @@ class Plant extends Model
     {
         return $this->hasMany(CoilPacking::class, 'plant_id', 'id');
     }
+
+    public function productionTemp()
+    {
+        return $this->hasMany(ProductionTemp::class, 'plant_id', 'id');
+    }
 }