d(this.productKey).set({
          add: timestamp,
          cost: productCost,
          name: productName,
          sku: productSKU,
          image: imageURL,
          description: productDescription,
          color: productColor,
          inventory_code: inventoryCode,
          inventory_use: inventoryQuantity,
          part: productPart
        }).then(() => {
          this.openProductList()
          this.toastText = 'Add product successfully.'
          this.$.toastAlert.open()
        }).catc