For FOB goods, of course, the seller is responsible for all costs before leaving the shore, and the buyer is of course responsible for sea freight and import costs. The risk of shipping is borne by the buyer (generally you can buy your own insurance). As for how to collect payment, it depends on the contract between you and the customer. In the FOB transaction terms, special attention should be paid to the credit of the freight forwarder designated by the customer. You should emphasize to the freight forwarder that the goods cannot be released to the customer without your help.