 value="">

                        <div class="form-group">
                            <label class="col-sm-2 control-label">归属产品</label>
                            <div class="col-sm-10">
                                <select id="product_code" name="product_code"
                                        data-placeholder="归属产品...."
                                        class="chosen-select form-control m-b" >
                                </select>
                            </div>
