A By-product is a secondary product deiving from a manufacturing process, chemical reaction, and is not the primary proct or service being produced.A by-product can be useful and marketable or it can be considered waste.
product is a secondary product. This is A By.-product is not the primary proct or service. This is A By. This primary proct is being produced.A by-product can be useful and marketable or it can be considered waste. Service is being produced.A by-product can be useful and marketable or it can be considered waste. This secondary product is deiving from a manufacturing process, chemical reaction.