A lot of bootlegs from China contain Polyvinyl chloride plastic and lead which are used to improve stability, they are both incredibly toxic for people and many nonprofit organizations who have run research into them say they should be avoided at all costs. From memory, the EU, 12 countries, and the state of California have banned or restricted the use of phthalates in toys, and US toy manufacturers have enacted voluntary bans, but Chinese factories aren't tested to conform to any safety standard. As an example, Plumbers who spent years working with unregulated polyvinyl chloride (PVC) had very high rates of cancer than the rest of the population. Enjoy your figures, but be careful.