Punjab Chem buys 30% stake in US firmRajesh S Kurup / Mumbai October 10, 2007Agrochemicals firm Punjab Chemicals and Crop Protection (PCCPL) has acquired a 30% stake in US-based Source Dynamic LLC for an undisclosed sum. PCCPL also has an option to acquire the remaining 70% stake in the US firm. It is also planning to invest $25 million to expand the US operations.PCCPL is a leading manufacturer of basic industrial chemicals, and is also into production of active ingredients for crop protection like insecticides, herbicides and fungicides. This is the company