For checking of the systems and the start up works at the shipyard as well in case the production of hatch covers carried out by the customer, Mariner provides supervision and commissioning services worldwide. For production carried out in China, Mariner employs both experienced local engineers to respond to customer demands promptly and other staff engineers that respond to international demands. To complement its quality in design and production, Mariner also offers extensive and most efficient warranty services. Furthermore, even when our products are over their warranty period limits, we always respond to the demands and emergency onboard service with utmost care and urgency.