การทำตารางข้อมูล แต่ output pdf ออกมาตารางมันมีแถวไม่ครบตามข้อมูลครับ

$html ='<h2 align="center">Site Measurement Information</h2>';

			$html .='<h4>Project :'.$id_project.' </h4>';
			$html .='<h4>Quotation Number :'.$idquo.'  </h4>';

			


			$html .='<table style="border: 1px solid black;border-collapse: collapse;" align="center">';
		
			$html .='<thead>';
			


			$html .='<tr>';
				$html .='<th style="width: 20%; border: 1px solid black;border-collapse: collapse;" >รหัส Code</th>';
				$html .='<th style="width: 20%; border: 1px solid black;border-collapse: collapse;">รายละเอียดสินค้า Description</th>';
				$html .='<th style="width: 35%; border: 1px solid black;border-collapse: collapse;">ความกว้าง Width(mm.)</th>';
				$html .='<th style="width: 35%; border: 1px solid black;border-collapse: collapse;">ความสูง Height(mm.)</th>';
				$html .='<th style="width: 35%; border: 1px solid black;border-collapse: collapse;">จำนวน Quantity</th>';
			$html .='</tr>';
			


			$html .=' </thead>';


			
			$item = $this->m_site_measurement->get_info_measurement();
  				foreach ($item as $sitem_r){

  					$iditem = $sitem_r->f_id_quotation_item;
  					$idsite_measurement = $sitem_r->id_site_measurement;

			$html .='<tbody>';

			$html .='<tr>';
				$html .='<td align="center" style="width: 35%; border: 1px solid black;border-collapse: collapse;">&nbsp;&nbsp;'.$sitem_r->item_name_sm.'</td>';			

			$w = explode("/", $sitem_r->exact_width_mm);
									$count_w = count($w);
			
				$html .='<td align="center" style="width: 35%; border: 1px solid black;border-collapse: collapse;">&nbsp;&nbsp;'.$sitem_r->item_description.'</td>';
				$html .='<td align="center" style="width: 35%; border: 1px solid black;border-collapse: collapse;">&nbsp;&nbsp;'.$w[($count_w-1)].'</td>';


			$h = explode("/", $sitem_r->exact_height_mm);
									$count_h = count($h);
								

				$html .='<td align="center" style="width: 35%; border: 1px solid black;border-collapse: collapse;">&nbsp;&nbsp;'.$h[($count_h-1)].'</td>';
				$html .='<td align="center" style="width: 35%; border: 1px solid black;border-collapse: collapse;">&nbsp;&nbsp;'.$sitem_r->item_quantity.'</td>';
			$html .='</tr>';

			$html .='</tbody>';
			$html .='</table>';
			

			}	

			$filename = 'site_infomation_'.$idquo.'.pdf';
						
						$files = glob('uploads/site_infomation/*'); // get all file names (ARRAY)
						$count = count($files);
						
						for($i=0;$i<$count;$i++)
						{
							if($files[$i] == 'uploads/site_infomation/'.$filename)
							{
								unlink($files[$i]);// delete file
							}
						}
						
						
						$this->mpdf = new mPDF('th','A4');//
						//$this->mpdf = new mPDF('th','A3');
						$this->mpdf->debug = true;
						//$this->mpdf->SetDisplayMode('fullpage'); 
						$this->mpdf->WriteHTML($html);
						$this->mpdf->Output('uploads/site_infomation/'.$filename);