MVC4 视图报错问题:类型错误

[knife_s]

先上传报错内容

控制器代码

        private YfWeb.Models.PLUSEntities   db = new PLUSEntities();
        //
        // GET: /Admin/
        [HttpGet]
        public ActionResult Index()
        {
            return View(db.COMPANY.ToList());
        }

视图代码

@model YfWeb.Models.COMPANY

@{
    ViewBag.Title = "Index";
    Layout = "~/Views/Shared/_Layoutadmin.cshtml";
}

<h2>Index</h2>

@using (Html.BeginForm("index")) {
    @Html.AntiForgeryToken()
    @Html.ValidationSummary(true)

    <fieldset>
        <legend>公司基本资料维护</legend>

        @Html.HiddenFor(model => model.ID)

        <div class="editor-label">
            @Html.LabelFor(model => model.CompanyName)
        </div>

求解决，谢谢