woocommerce_product_detail_page_custom_fields.php

<?php

//Display custom fields on Woocommerce Product Details Page
add_action( 'woocommerce_single_product_summary', 'ci_woo_product_detail', 5 );
function ci_woo_product_detail() {
    global $product;
	
		
		echo '<div>';
	    echo '<span><strong> Text Field:</strong> ' . get_post_meta( $product->id, '_text_field', true ) . '</span>';
		echo '</div>';
        
        echo '<div>';
	    echo '<span> <strong>Number Field:</strong> ' . get_post_meta( $product->id, '_number_field', true ) . '</span>';
		echo '</div>';
        
        
        echo '<div>';
	    echo '<span> <strong>Text Area: </strong>' . get_post_meta( $product->id, '_textarea', true ) . '</span>';
		echo '</div>';
        
         echo '<div>';
	    echo '<span> <strong>Select Field:</strong> ' . get_post_meta( $product->id, '_select', true ) . '</span>';
		echo '</div>';
        
         echo '<div>';
	    echo '<span> <strong>Checkbox Field:</strong> ' . get_post_meta( $product->id, '_checkbox', true ) . '</span>';
		echo '</div>';
        
        echo '<div><span> <strong>Custom Field 1:</strong> </span>';
	    echo get_post_meta( $product->id, '_custom_field_one', true );
		echo '</div>';
        
         echo '<div><span> <strong>Custom Field 2:</strong> </span>';
	    echo get_post_meta( $product->id, '_custom_field_two', true );
		echo '</div>';
        
        echo '<div><span> <strong>Product Field:</strong> </span>';
	    print_r(get_post_meta( $product->id, '_product_field_type_ids', true ));
		echo '</div>';
        
        
	}