Angular 应该显示在表格中的嵌套循环

我想创建一个HTML表并显示每个国家/地区(PAYS_LIB)的数据.

我想要得到这样的结果:

<th>COUNTRY:</th>
BELGIUM
<th>LABEL:</th> | <th>ISINCODE: </th>
AB INBEV | NO0010571698
FRENCH
<th>LABEL:</th> | <th>ISINCODE: </th>
WWI | AO0010571614

目前，我有这样的 idea :

<th>COUNTRY:</th>
BELGIUM
FRENCH
<th>LABEL:</th> | <th>ISINCODE: </th>
AB INBEV | NO0010571698
<th>LABEL:</th> | <th>ISINCODE: </th>
WWI | AO0010571614

我不熟悉嵌套循环...

以下是JSON的一个概念

REGROUPEMENT = [
    {
      TYPEVALUE: 11,
      ASSETCATLABEL: 'Actions individuelles',
      CURRENCY: 'EUR',
      AMOUNT: 1646956.5,
      PERCENTAGE: 79.22,
      ELEMENT: [
        {
          LABEL: 'AB INBEV',
          PAYS_LIB: 'BELGIUM',
          ISINCODE: 'NO0010571698',
        },
        {
          LABEL: 'WWI',
          PAYS_LIB: 'FRENCH',
          ISINCODE: 'AO0010571614',
        },
      ],
    },
  ];

和我的代码

<div class="container text-center ">
    <h2 class="pt-3 pb-3">HTML Table</h2>

<table *ngFor="let item of REGROUPEMENT">
  <tr>
    <th>TYPE</th>
    <th>PRICE</th>
  </tr>
  <tr >
    <td>{{ item.ASSETCATLABEL }}</td>
    <td>{{ item.AMOUNT }}</td>
  </tr>

  <tr>
    <th colspan="3">COUNTRY</th>
  </tr>
  <tr *ngFor="let elem of item.ELEMENT">
    <td  colspan="3"> {{ elem.PAYS_LIB }} </td>

  </tr>

  <tr>
    <th>LABEL</th>
    <th>ISINCODE</th>
  </tr>

  <tr *ngFor="let elem of item.ELEMENT">
    <td> {{ elem.LABEL}}</td>
    <td> {{ elem.ISINCODE}}</td>
  </tr>

</table>

</div>

我还创建了一个复制品=&gt；https://stackblitz.com/edit/github-z6v4p8?file=src/app/todo/todo.component.ts