On May 21, formaldehyde prices at Jin Yimeng in Linyi, Shandong were raised by 15 CNY/ton, quoted at 1,420 CNY/ton ex-works in cash. Chempricehub comments on formaldehyde: Long-short score. On May 21, the price of formaldehyde at Jin Yimeng in Linyi, Shandong was raised by 15 CNY/ton, quoted at 1,420 CNY/ton ex-works in cash. The upward adjustment in spot prices provides positive support for the formaldehyde market price, benefiting the spot price of formaldehyde.