Yes it means production line in Yahua was broadened/increased.
Yahua being our biggest spodumene buyer needed Galaxy to slow shipments while they bring the hydroxide/carbonate production line on.
https://news.metal.com/newscontent/100942146/Sichuan-Yahua-commences-20,000-mt-lithium-hydroxide-and-carbonate-production-line/SHANGHAI, Jun 25 (SMM) – Sichuan Yahua Industrial Group commenced a battery-grade lithium hydroxide and carbonate production line with annual capacity of 20,000 mt on Tuesday June 25.
With an investment of 790 million yuan, the project, located in Ya’an city of Sichuan province, is also designed to produce 46,000 mt of anhydrous sodium sulphate in a year.