Does anyone have any insight into the Australian Sheepskin industry?

I’m looking at a business that imports Australian sheepskin apparel directly from China. The business looks good from the outside, however on closer inspection I have a few questions that I would love to discuss with some in this community.

1) should I be weary of the geopolitical tension between Aus/China? If so what should I be considering?
2) the top customer makes up 30% of revenue. Is this considered normal for such businesses? How do I guarantee that this customer stays on well after I have acquired the company?
3) I would love to speak with anyone who can shed more light on this industry.