Diadem shipping limited. Is an international freight forwarder offering a wide variety of service for a variety of customers including private individuals, manufacturers, importers/exporters, and businesses. Services include ocean freight, customs brokerage, trucking/transportation, and cargo insurance. Ocean freight services are available at competitive rates, and cargo insurance covers you port-to-door. Ocean freight is available at Shanghai, Qingdao, Shenzhen, Guangzhou and Hong Kong. We provide expert pickup and delivery to piers.