EghtesadOnline: Sam Wolf moved his family's health and wellness business online more than a decade ago. The Conshohocken, Pennsylvania-based company runs its own warehouse and sells thousands of nutrition products in dozens of countries through its own website as well as on Amazon.com Inc. and EBay Inc. But all that know-how didn't quite prepare Wolf for the experience of selling into China through Alibaba Group Holding Ltd.'s online stores.