Tokyo Marui have also been found to use the same materials, some traces of lead in their products. I think I read this on Arnies. It's simple, just don't lick or eat your AEG and you'll be fine.
Regardless, while I think Dboys products definitely have issues, they are the most inexpensive to get and might be suitable for people on a budget.
If you can afford better, then get something better.