Professional Mechanical Repair Services Co. Ltd. We are an API registered company in Dammam, 1st industrial city, Saudi Arabia. We have been in the market since 2011 working with the most prestigious companies in the oil & gas field. We are licensed with API 6A, 16A, 16C and 7-1. We have the capabilities to repair, test, recertify, manufacture and remanufacture oilfield equipment, such as chokes and gate valves, tubing spools, casing heads, trees, flanges, adaptor flanges, spools, crosses & tees, choke and kill manifold assemblies and other oilfield equipment.