修改充装介质的逻辑，判断当前页面是否有LNG关键字

yudao-server/src/main/java/cn/iocoder/yudao/server/service/ProductQualifiedService.java

@@ -33,15 +33,15 @@ public class ProductQualifiedService {
         equipmentRegistryRespVO.setEquipmentType("特种气瓶");
         equipmentRegistryRespVO.setProductName("车用气瓶");
         equipmentRegistryRespVO.setCylinderQuantity(1);
-        int fillingMediumOffset = 4;
-        if (!postfix.equals("pdf")) {
-            fillingMediumOffset = 3;
-        }
-        String fillingMedium = extractManufacturer(texts, fieldMap.get("fillingMedium"), fillingMediumOffset);
-        if (ObjectUtil.isNotEmpty(fillingMedium)) {
-            //充装介质
-            equipmentRegistryRespVO.setFillingMedium(fillingMedium);
+
+        //充装介质
+        boolean hasFillingMedium = texts.stream().anyMatch(t -> t.equals("液化天然气") || t.contains("LNG"));
+        if (hasFillingMedium) {
+            equipmentRegistryRespVO.setFillingMedium("LNG");
+        } else {
+            equipmentRegistryRespVO.setFillingMedium("CNG");
         }
+
         int nominalWorkingPressureOffset = 1;
         if (!postfix.equals("pdf")) {
             nominalWorkingPressureOffset = 2;