woocommerce_register_post_type action-hook . WC 1.0

Usage

add_action( 'woocommerce_register_post_type', 'action_function_name_2521' );
function action_function_name_2521(){
	// action...
}

Where the hook is called

do_action( 'woocommerce_register_post_type' );

Where in WP core the hook is used WooCommerce