Thank you very much for your reply.
> As I talked with you today, our engineer can ship spare parts for using when
> the parts are necessary to be exchanged.
> When our engineer finds the parts are necessary to be exchanged on the
> customer's site, he will exchanged it after getting approval from the
> end-user.
> In this case, you will send us the order only the exchanged spare parts.
> and he will return spare parts which are not exchanged on this time.
>