diff --git a/server/plugins/asanServiceSerialChecker.js b/server/plugins/asanServiceSerialChecker.js
index 5d2953d..a903dc8 100644
--- a/server/plugins/asanServiceSerialChecker.js
+++ b/server/plugins/asanServiceSerialChecker.js
@@ -10,8 +10,13 @@ const serialChecker =  (serial, type = 'guaranteeSerial', g = 1) => {
     if (type === 'guaranteeSerial') exelsPath = guaranteeSerialsPath + `/${g}`;
     if (type === 'orginality') exelsPath = productSerialsPath + `/${g}`;
 
-    const lowerSerial = serial.toLowerCase().replace("-", "").replace("_", "");
-
+    const newTxt = serial.toLowerCase().split("-")
+    let lowerSerial = ""
+    for(const item of newTxt){
+    
+      lowerSerial += item
+        
+    }
     try {
       const serialFiles = await fs.readdirSync(exelsPath);
       if ((serialFiles?.length) <= 0) {
diff --git a/test.js b/test.js
new file mode 100644
index 0000000..3fbf676
--- /dev/null
+++ b/test.js
@@ -0,0 +1,3 @@
+const txt = "s-01E33301G-M810924394"
+
+console.log(newitem)
\ No newline at end of file