i think the useful coustom will pay all the charges by himself ,for my clients often do it like that.if not ,i think he must be the cheater

In my opinion,most of foreigners who will visit you  aim to do business with you but not your treat.If you could afford it,you'd better welcome his visit.After all,you will have a additional friend.If not ,you also could find a reason to reject him.you could say:"Sir ,I am sorry .I have to go out for business these week.Shall we talk about the business by email or can you visit us at other time?"
$L$@.Q,L2n)k5e[A Professional Business Forum]Try your imagination,there are so many reasons you could state.

~~~~~

I think you need to think about it in another hand,you know,actually customers paid more to come to china,not only money,but also energy,it is not easy for customer to come to china,I think once company can come here,it means they want to do business,you just need make a good schedule to arrange customer visiting.if customer just want to eat or play,why don't spend the trip money to buy the food in his local market?so I don't think it is good way to refuse customer visiting.

it is a hard thing!!!
.e3?.Y7h'e!w$o&Vbusiness forum,trade forum,business opportunity,Business China,Business India,Brazil businessAnd if they are really in the market of your products that you will lose a good customor,
1[8m3v$W6Y'I&Z#\.`#p[A Professional Business Forum]i think it is also a wonderfully chance to let the foreigners know that in China there is a good factury like yours,if there will be a business chance ,they will contact you first!!FOB Business Forum&W.J6U$~4l(T6P5C
so come on!!!

In my opinion ,different client ,diffenent treat.

say no simply,,,no  one has the right to know what u  would be doing at that time

It really a difficult problem ,so i think it is  important for you to share your view with your supervisor.And then to decide wheher to pick up the foreign customers or not .