With support and guidance from PVI Holdings , Carter Chambers , LLC and Desselle-Maggard Corporation will continue to provide support to the chemical and petrochemical industries as well as refining , paper , marine , power , engineering , construction , oil and gas industries . � � A focus on supporting emerging green technology markets , including biodiesel and ethanol , will continue as a corporate initiative . � � Carter Chambers , LLC and Desselle-Maggard Corporation will continue to represent their top world-class manufacturers .