Economic Observation Network Futures Review: As of the close, the main domestic futures contracts have fluctuated in price. Polycrystalline silicon hit the daily limit up, rising 9%, lithium carbonate rose more than 5%, the main contracts for consolidated European shipping, crude oil, and low sulfur fuel oil rose more than 3%, and industrial silicon and Shanghai silver rose more than 2%; In terms of decline, caustic soda fell by over 3%, butadiene rubber fell by over 2%, and No. 20 rubber, pigs, rubber, apples, palm oil, and PTA fell by over 1%.