According to me-metals cited from mining.com, The group also set processing fees for imported cargoes at $10–$30 per dry ton, Antaike said, adding that it discussed how to “strengthen industry self-discipline” in an environment where “zinc smelting and processing fees continue to seriously deviate from costs”.
In August, major Chinese zinc smelters had agreed at a meeting to adjust planned maintenance on production lines and postpone commissioning of new capacity, according to a report from Antaike at the time, as falling ore processing prices due to tight ore supply eroded the sector’s profits.
They had also discussed potentially establishing a floor pricing mechanism for zinc concentrate treatment charges.
($1 = 7.1030 Chinese yuan renminbi
source: mining.com