diff --git a/src/main/java/emu/nebula/data/GameData.java b/src/main/java/emu/nebula/data/GameData.java
index 4c4e24f..5b7bb0f 100644
--- a/src/main/java/emu/nebula/data/GameData.java
+++ b/src/main/java/emu/nebula/data/GameData.java
@@ -31,7 +31,8 @@ public class GameData {
     @Getter private static DataTable<DiscPromoteLimitDef> DiscPromoteLimitDataTable = new DataTable<>();
     
     @Getter private static DataTable<ItemDef> ItemDataTable = new DataTable<>();
-
+    @Getter private static DataTable<ProductionDef> ProductionDataTable = new DataTable<>();
+    
     @Getter private static DataTable<MallMonthlyCardDef> MallMonthlyCardDataTable = new DataTable<>();
     @Getter private static DataTable<MallPackageDef> MallPackageDataTable = new DataTable<>();
     @Getter private static DataTable<MallShopDef> MallShopDataTable = new DataTable<>();
diff --git a/src/main/java/emu/nebula/data/resources/CharacterSkillUpgradeDef.java b/src/main/java/emu/nebula/data/resources/CharacterSkillUpgradeDef.java
index a9f683e..4eba494 100644
--- a/src/main/java/emu/nebula/data/resources/CharacterSkillUpgradeDef.java
+++ b/src/main/java/emu/nebula/data/resources/CharacterSkillUpgradeDef.java
@@ -3,13 +3,12 @@ package emu.nebula.data.resources;
 import emu.nebula.GameConstants;
 import emu.nebula.data.BaseDef;
 import emu.nebula.data.ResourceType;
-import emu.nebula.data.ResourceType.LoadPriority;
 import emu.nebula.game.inventory.ItemParamMap;
 
 import lombok.Getter;
 
 @Getter
-@ResourceType(name = "CharacterSkillUpgrade.json", loadPriority = LoadPriority.LOW)
+@ResourceType(name = "CharacterSkillUpgrade.json")
 public class CharacterSkillUpgradeDef extends BaseDef {
     private int Group;
     private int AdvanceNum;
diff --git a/src/main/java/emu/nebula/data/resources/ProductionDef.java b/src/main/java/emu/nebula/data/resources/ProductionDef.java
new file mode 100644
index 0000000..36792a1
--- /dev/null
+++ b/src/main/java/emu/nebula/data/resources/ProductionDef.java
@@ -0,0 +1,34 @@
+package emu.nebula.data.resources;
+
+import emu.nebula.data.BaseDef;
+import emu.nebula.data.ResourceType;
+import emu.nebula.game.inventory.ItemParamMap;
+
+import lombok.Getter;
+
+@Getter
+@ResourceType(name = "Production.json")
+public class ProductionDef extends BaseDef {
+    private int Id;
+    private int UnlockWorldLevel;
+    private int ProductionId;
+    private int ProductionPerBatch;
+    private int RawMaterialId1;
+    private int RawMaterialCount1;
+    
+    private transient ItemParamMap materials;
+    
+    @Override
+    public int getId() {
+        return Id;
+    }
+
+    @Override
+    public void onLoad() {
+        this.materials = new ItemParamMap();
+        
+        if (this.RawMaterialId1 > 0) {
+            this.materials.add(this.RawMaterialId1, this.RawMaterialCount1);
+        }
+    }
+}
diff --git a/src/main/java/emu/nebula/game/inventory/Inventory.java b/src/main/java/emu/nebula/game/inventory/Inventory.java
index 41a93f8..6907fae 100644
--- a/src/main/java/emu/nebula/game/inventory/Inventory.java
+++ b/src/main/java/emu/nebula/game/inventory/Inventory.java
@@ -296,6 +296,36 @@ public class Inventory extends PlayerManager {
         return hasItems;
     }
     
+    // Utility functions
+    
+    public PlayerChangeInfo produce(int id, int num) {
+        // Get production data
+        var data = GameData.getProductionDataTable().get(id);
+        if (data == null) {
+            return null;
+        }
+        
+        // Get materials
+        var materials = data.getMaterials().mulitply(num);
+        
+        // Verify that we have the materials
+        if (!this.verifyItems(materials)) {
+            return null;
+        }
+        
+        // Create change info
+        var changes = new PlayerChangeInfo();
+        
+        // Remove items
+        this.removeItems(materials, changes);
+        
+        // Add produced items
+        this.addItem(data.getProductionId(), data.getProductionPerBatch() * num, changes);
+        
+        // Success
+        return changes.setSuccess(true);
+    }
+    
     // Database
     
     public void loadFromDatabase() {
diff --git a/src/main/java/emu/nebula/server/handlers/HandlerItemProductReq.java b/src/main/java/emu/nebula/server/handlers/HandlerItemProductReq.java
new file mode 100644
index 0000000..45615c2
--- /dev/null
+++ b/src/main/java/emu/nebula/server/handlers/HandlerItemProductReq.java
@@ -0,0 +1,28 @@
+package emu.nebula.server.handlers;
+
+import emu.nebula.net.NetHandler;
+import emu.nebula.net.NetMsgId;
+import emu.nebula.proto.ItemProduct.ItemProductReq;
+import emu.nebula.net.HandlerId;
+import emu.nebula.net.GameSession;
+
+@HandlerId(NetMsgId.item_product_req)
+public class HandlerItemProductReq extends NetHandler {
+
+    @Override
+    public byte[] handle(GameSession session, byte[] message) throws Exception {
+        // Parse request
+        var req = ItemProductReq.parseFrom(message);
+        
+        // Produce item
+        var changes = session.getPlayer().getInventory().produce(req.getId(), req.getNum());
+        
+        if (changes == null) {
+            return this.encodeMsg(NetMsgId.item_product_failed_ack);
+        }
+        
+        // Send response
+        return this.encodeMsg(NetMsgId.item_product_succeed_ack, changes.toProto());
+    }
+
+}