Some different things. One reviewer I read regularly had problems with all the cal exotics toys she was given, and she's a reliable reviewer who's deicded to stop taking any more review products from them. Things like the products containing materials that were not stated. Silicone toys failing flame tests. Smelly gunk turning up in sex furniture that should just be a big bean bag. With one rabbit they gave her three different excuses for why her toy smelled a certain way, and in the end they settled on it being a problem with glue not being set properly on the base of her rabbit.
Other reviewers seem to be pretty disparaging about cal exotics aswell, and, while I don't want to sound like someone that believes everything they're told, there must be a reason for so many reviewers with respected blogs have problems with this company over others.
Having said that, the toys they release under the Jopen company name are getting better reviews, so they might be changing their ways.