Business cards are given with both hands and thumbs up, do not directly hide the card away since this is considered rude. Do not play with the card or write any details on the card. The best thing is to study the card closely for a while and then put it infront of you on the table. Do not throw cards across table. This is considered to be very rude and disrespectful. Always handle the business card with great care and respect. After you finish the conversation pick it up and take it with you. Do not put it in your pocket directly!