Instead of making chemical products directly in your own plant (as a person who is in the business of manufacturing such products), you can decide to have the actual manufacturing work done by contract manufacturers. In that regard, there are two things you need to be very keen on, when working with such a contract manufacturer.
The first thing you need to be very keen on, when working with a contract manufacturer for chemical products, is seeing to it that instructions flow (to the contract manufacturer) efficiently. This doesn’t have to be too involving. You can take advantage of Gmail speed where, for instance, you use the www.gmail.com chat feature, to keep on talking with the folks running the contract manufacturing operations, and hence ensure that things are working well. At no point should the folks on the other end be at a loss on what to do.
The second thing you need to be very keen on, when working with a contract manufacturer for chemical products, is seeing to it that finances flows efficiently: to keep the whole operation running. You need to remember that most of these contract manufacturers tend to be folks with very limited capital resources. Thus, unless you keep on funding them, they are likely to halt your operations the moment money runs out.