<?php
add_action( 'graphql_register_types', function() {
  register_graphql_field( 'Product', 'tech_specs', [
     'type' => 'String',
     'description' => __( 'tech specs', 'wp-graphql' ),
     'resolve' => function( $post ) {
		 $id = $post->ID;
       $specs =		 get_field( "tech_specs",$id);

		 $enc = strip_tags($specs,"<p>,<br>,<ul>,<li>");
       return $enc;
     }
  ] );
} );
?>