I have a LLC company and operate as an engineering consultant. Up to now I was the go between 2 companies in regards to product and sell a product. I put both together and if needed did the requiert engineering work and the after the sale of products was completed, my company would receive the predetermined commision. Now several of the producers of goods have asked me to become the direct customer to them, add my markup the the quote and then sell it to the end user. I have no experience doing this, Questions I have are 2 fold. Liability for the products sold by my company, but not produced. Tax issues regarding sales tax and federal taxes. I am a sole operator of my business. Should I agree to the change in the selling process or do I have to abandon this area of my business.