Sark offers a complete maintenance and re-approval service for industrial containers, guaranteeing maximum safety and reliability. Services include container repair and maintenance, frame straightening, re-inflation of imploded tanks and leak testing. The equipment used is certified and the staff are highly trained to carry out calibration tests on vent valves and TIG/MIG welding. The company also handles the periodic re-approval of tanks of various capacities, providing testing assistance and the necessary documentation to ensure regulatory compliance.