Nice to see so much interest in this company. Just so that CRG doesn't get ragged on too much, especially considering the last comment: normally when a business is for sale they decline to give details that would identify them specifically, such as the website above, their specific location etc. In many cases total sales or earnings are also not listed and are available only upon the approval of the potential buyers financial statement and stated intentions as well as a Non-Disclosure Agreement wherein you are legally bound not to release or profit by anything learned in the relationship.
This pretty much makes any listing a point of curiosity, so I understand the questions. But please let CRG protect themselves from their competitors by allowing them to keep quiet as much as possible.
If you are a serious buyer contact them directly and take it from there, as I have.