[Shanghai Energy Exchange: Adjustments to the price limit range and margin level of some varieties during the Spring Festival] The price limit range of international copper futures contracts is adjusted to 10%, the hedging margin ratio is adjusted to 11%, and the speculative margin ratio is adjusted to 12%; the price limit range of crude oil and low-sulfur fuel oil futures contracts is adjusted to 10%, the hedging margin ratio is adjusted to 11%, and the speculative margin ratio is adjusted to 12%; the price limit range of No. 20 rubber futures contracts is adjusted to 9%, the hedging margin ratio is adjusted to 10%, and the speculative margin ratio is adjusted to 11%; the price limit range of the container shipping index (European line) futures contract is adjusted to 20%, and the trading margin ratio is adjusted to 22%.