Is Shandong Expressway a central enterprise or a state-owned enterprise?

It is a state-owned enterprise.

According to (Tianyancha) query, Shandong Expressway Group Co., Ltd. is a limited liability company (state-owned), established in 1997 and located in Jinan City, Shandong Province. Is a civil engineering and construction-oriented enterprises. Business scope: construction, management, maintenance, operation, development and charging of expressways, bridges, railways, ports and airports; Comprehensive development and management of supporting resources along highways, bridges and railways; Logistics and related support services; Investment in financial industry, asset management (approved by relevant departments), etc.