How to pull data from products to woocommerce orders?

Question

WooCommerce

Good afternoon. There was a task to pull arbitrary meta data of goods into Woocommerce orders. Specifically, when placing an order, there should be hidden fields, the values ​​\u200b\u200bof the meta data fields of the product are displayed there (I could do it).
It remains to make sure that these data are saved when the client clicks on the checkout button, and they were these values ​​in arbitrary meta data already in the order.
How can this be implemented if you go through the steps:
1) Fields with display: none; on the checkout page - Done
2) After clicking checkout, these fields are saved and displayed in custom meta fields in woocommerce orders