diff --git a/app/Filament/Imports/PlantImporter.php b/app/Filament/Imports/PlantImporter.php
index 189cff4..569966f 100644
--- a/app/Filament/Imports/PlantImporter.php
+++ b/app/Filament/Imports/PlantImporter.php
@@ -46,6 +46,19 @@ class PlantImporter extends Importer
     public function resolveRecord(): ?Plant
     {
         $company = \App\Models\Company::where('name', $this->data['company'])->first();
+        if (!$company) {
+            return null;
+        }
+
+        $plantCN = \App\Models\Plant::where('code', $this->data['code'])->where('name', $this->data['name'])->first();
+        if (!$plantCN) {
+            $plantCode = \App\Models\Plant::where('code', $this->data['code'])->first();
+            $plantName = \App\Models\Plant::where('name', $this->data['name'])->first();
+            if ($plantCode || $plantName) {
+                return null;
+            }
+        }
+
         return Plant::updateOrCreate([
                 'code' => $this->data['code'],
                 'name' => $this->data['name'],