保留小数点后6位

src/views/saleOrder/components/create-order.vue

@@ -375,7 +375,7 @@
           this.$set(
             pos[index],
             'productWeight',
-            row.contractNum * row.productUnitWeight
+			parseFloat( row.contractNum * row.productUnitWeight ).toFixed(6)
           );
         }
       }