Economic Observation Network Futures Noon Review: As of noon trading, the commodity has fluctuated between gains and losses. Polycrystalline silicon increased by over 8%, lithium carbonate and SC crude oil increased by over 4%, and low sulfur fuel oil and fuel oil increased by over 3%; In terms of decline, butadiene rubber and caustic soda fell by more than 3%, No. 20 rubber and rubber fell by more than 2%, and apples, pigs, and Shanghai tin fell by more than 1%.