China has achieved a milestone in marine oil and gas technology with the delivery of the Marjan platform to Saudi Arabia's Aramco. This massive offshore platform, set to become a key hub for the Marjan oilfield cluster, boasts an impressive annual capacity of 24 million tons of crude oil and 7.4 billion cubic meters of associated gas. Recognized as one of the largest and most advanced platforms globally, the Marjan platform's construction involved overcoming significant technical challenges.