Please see:
I don't think 媽媽宝宝 is being irresponsible. They just can't say that PC is not safe. In fact, I think they have done some research on it. Please see:
FDA have long approved PC. Has anyone tested PES or PPSU to see if they are really "safe" to use? I personally think that ALL plastic releases some sort of chemical, it all depends on how much it is. PC is well below that standard. Who knows 10 years later if anyone comes up with something against PES or PPSU? At least people have been using PC for so long and so far nothing happens. I rather stay with PC or glass. Also, don't forget that many of those plastic containers around you are made by PC. Not just your baby bottles.
Besides, like what other moms said earlier here...these are just some of the marketing and selling technique that those bottles use to make you guys switch to them or change bottle every 6 months. By the time your baby reaches 6 months, your baby won't drink that often.
Lenglengma