I would say that an alternative option to dual sourcing would be to also keep a “cushion” stock or back stock of both the final product and each component. This is often done at times in the industry. To ensure that this back stock does not expire and become a waste of money, it is continually replaced with the new stock product. For example, if you are due to have 6 crates of a skin graft in back stock and you usually ship out 4 crates for sale on a monthly basis, you would create the 4 new crates, put them into back stock, take 4 crates out of back stock and ship them to your vender/retailer. It allows for constant flow and if something were to go wrong while producing the 4 crates intended for ship, you have the 6 in back stock, ready to go, while you take time to sort out the issue.