Looking at it subjectively, I just imagined Wey Yu already had a xenomorph. Thereby allowing them to either egg morph, or wait for the creature to evolve into a queen and begin producing. The source of the eggs never really seemed like an issue to me. It's the company, they have em, nuff said.
To go out in left field, and just for the fun of it, I'd say they have a company owned hive already, like I assumed it was in the fan film Alien: Special Order.