First of all, there is something wrong with your question itself. There is no saying that "non-tankers with a gross tonnage of 10000 or more should pay the compensation fund for oil pollution damage from ships".

Secondly, according to the Administrative Measures on the Collection and Use of the Compensation Fund for Oil Pollution Damage from Ships, the owner or his agent who receives the persistent oil substances transported by sea in the waters under the jurisdiction of People's Republic of China (PRC) shall pay the compensation fund for oil pollution damage from ships in accordance with the regulations. The fund collection standard is 0.3 yuan per ton of persistent oil substances.

Note that the object of payment here is not the ship, but the shipowner or his agent who receives the marine persistent oil.

There is no compulsory oil pollution fund for ships in China, but some specific ships are required to purchase oil pollution damage liability insurance.