Doing business with China, particularly with printing supplies is probably not much different from ordering from your local US-based Chinese restaurant. If you ordered up big, you might score a few freebie egg rolls with the order. US distributors of printing consumables are wooed by the cheap prices from China and look for a bargain in their shipments.
For those not aware of it, an egg roll is a cylindrical, savory roll with shredded cabbage, chopped pork, and other fillings and is usually eaten with the fingers, dipped in duck, soy sauce or plum sauce. They have become a ubiquitous feature of American Chinese cuisine and are often served as free additions to American Chinese combination platters throughout the United States and are closely related to, but distinct from, the spring rolls served in mainland China. A Cultural history of Chinese food in the United States” has stated that the modern American egg roll was probably invented at a Chinese restaurant in New York City in the early 1930s.