The profit-margin is high for smugglers bringing pangolins into China from Africa.
A Chinese museum has removed photographs which compare African people to animals from a controversial exhibition.
Soaring demand for the products in China has seen an estimated one million pangolins plucked from Asian and African forests over the past decade.
Donkeys are being increasingly slaughtered in South Africa to supply smugglers who export the skins to China.
One young Taiwanese suspect deported from Kenya to Beijing in April said he had simply done it for the money.