Soviet trade on China according to a CIA report dated 20 June 1952

An item reported that since the trade between the Soviet Union and China became more and more regularly Russian and Polish merchant ships departed from Gydnia towards Chinese harbours like Tsingtao and Dairen for instance the harbour of Tsingtao. Heavy trucks and passenger buses both built in Czechoslovakia were in this manner transported. Between the 50-150 trucks or buses were constant waiting Gdynia to be loaded. Once cargo was transported, came a new one from Czechoslovakia.

Source
The report was published on www.archive.org, document number CIA-RDP82-00457R012400070009-2