We have gotten food here several times - not because the food is spectacular, but we love Chinese and it's the only option in Waunakee.
We got food on Sunday and I kept finding little black flecks throughout my beef lo mein. It appeared to be pieces of the nonstick coating from a skillet. I was pretty grossed out, but so hungry that I just picked them out. That's when I found a small shard of metal.
Let's just say we will not be returning to China Wok.