I think it depends on different people u'll send gifts in different situations. First, for biz hosts, u can treat them a big dinner as well as sending them some work of art such as pictures , handwritings, special artwork from New York, wine, etc. You'd better learn about what ur biz hosts like best in advance. For the hosts of ur good friends, or acquaintence, u can treat them a dinner as well. If they have kids, send their kids some gifts such as chocolate, gadgets, pens, stationary , etc. If u think that's not enough, u can also send gifts such as a tie,a leather belt or a watch to the host at the same time. Secondly, for ur new friends, generally speaking, in china we seldom send any gifts to new friends. Especially if ur new friends are female, if u send them gifts, it's quite easy to make u misunderstood. Even if they wouldn't think u want to hunt for them, they will consider ur action quite strange,too. But if ur new friends have helped u a lot, things will be different. In this situation, u can treat them a dinner, too. Or if they are young, u can also invite them to have a short-distance trip. ok, Dan, i have listed several possible rituals to u for u to choose. If ur situations are different from the above, that'll have different rituals. It just depends. The above rituals i listed are the most traditional chinese.

mr dan .as for the manners ,there is only one rule to be obeserve that is to make youself at your country . great affection is the point and gift is second.so there is an old saying in China "千里送鹅毛，礼轻情谊重" means "the gift itself may be light as a goose feather, but sent from afar, it conveys deep feeling" haha .. there was maybe many worry grammer in my answer. but hope you can Understand. best wishes ..

They would like to receive some special gifts which comes from your country or your area. Special ,funny could be well liked. 0-22 gadgets are the first choice. stationery is ok(to wish someone who can has a great success on his/her studies). 23-50 foods(candy,cracker,i guess girls would more like them than boys) cosmetics(that could be most popular with girls,no doubt about it .) drinks(alcohol,beer,wine,coffee,fruit juice...).tobacco products. 51+ I've no idea.maybe fitness equipments ? lol...

firstly i think different chinese regions have different customs,and i know people don't like sending clocks as it has the same pronunciation of 送终（something similar to go to a funeral).If you don't want to spend too much time considering what gifts to give, the safiest choices are fruits or cookies or other popular food, snacks.But if you want to impress someone,you should know his or her taste. Genarally, we chinese are very kind and most people won't be demanding in this gift issue. btw,stationery is ok,but adults don't usually do that.If he likes classical music, a cd maybe suitable. Anyway,just learn more about the preference of the person you want to send gift to.

In china, give gift is not too particular, almost are food. Of course, other gift is good too, but you give the clock as gift, because, in chinese clock's pronunciation is die.