The trick with China, is to get the contacts of one of the Kenyans in China who specialise in assisting Kenyans in China to go about doing business, they are fairly honest and charge a fee to guide you and arrange shipment, which in not a major process there. Huyu mtu is the most important thing if you are going to China, ask around for a reliable one before you go. In China there is a very wide variance in quality so just buy what (whatever) you think you can sell to the clients you are targeting.
There is a possibly true tale of a "very intelligent" Kenyan who was taken to a factory in China by one of this guides to tell them to make him a special roofing (maybe with just a mirrionlike your friend), the factory quickly obliged, gave him some credit, he shipped thousands back to Kenya, made mirrions, of mirrions of money, when he went back for more, he was told because they had patented his idea, "you pay more", many people now buy that roofing from that factory in Kenya, Africa, and around the world, billions lost.
A New Kenya