CAMBRIDGE, Mass.--(BUSINESS WIRE)--Metabolix, Inc. (NASDAQ: MBLX) and CJ CheilJedang (CJ) announced today the execution of a joint development agreement to advance production technology and assess investment options for the commercialization of renewable C4 chemicals via fermentation. The C4 chemical market is a $3 billion industry growing at 4 percent per year. C4 chemical products are used in a wide range of applications including engineering plastics, fabrics and fibers, personal care products and in semiconductor manufacturing.