Just override file into your theme,
app/code/{Packagename}/{themename}/Magento_Catalog/templates/product/view/attributes.phtml
Just keep line, <?php if($_data['value'] == 'N/A') continue;?> after <?php foreach ($_additional as $_data): ?> line,
Full code,
<?php /** * Copyright © 2013-2017 Magento, Inc. All rights reserved. * See COPYING.txt for license details. */ // @codingStandardsIgnoreFile /** * Product additional attributes template * * @var $block \Magento\Catalog\Block\Product\View\Attributes */ ?> <?php $_helper = $this->helper('Magento\Catalog\Helper\Output'); $_product = $block->getProduct() ?> <?php if ($_additional = $block->getAdditionalData()): ?> <div class="additional-attributes-wrapper table-wrapper"> <table class="data table additional-attributes" id="product-attribute-specs-table"> <caption class="table-caption"><?php /* @escapeNotVerified */ echo __('More Information') ?></caption> <tbody> <?php foreach ($_additional as $_data): ?> <?php if($_data['value'] == 'N/A') continue;?> <tr> <th class="col label" scope="row"><?php echo $block->escapeHtml(__($_data['label'])) ?></th> <td class="col data" data-th="<?php echo $block->escapeHtml(__($_data['label'])) ?>"><?php /* @escapeNotVerified */ echo $_helper->productAttribute($_product, $_data['value'], $_data['code']) ?></td> </tr> <?php endforeach; ?> </tbody> </table> </div> <?php endif;?>
Clear cache.