China's daily crude throughput hits 45-month low in May
Shandong independents unload less feedstock in May
Independents' crude refining losses continue to narrow
Independents' crude refining margins recoup more losses
Independents' refining margins for imported crude soar
Independents' crude refining margins drop on rising costs
Independents' crude refining margins recoup some losses
Independents find more losses in imported crude refining margins