SHANGHAI, May 21 (SMM) — Operating rates across primary lead smelters in Henan, Hunan and Yunnan provinces increased 3.6 percentage points from the previous week to 61.3% in the week ended May 21, showed an SMM survey.
Henan Jinli and Jiyuan completed maintenance and returned to normal production this week; Hunan Chenzhou Xiongfeng suspended its crude lead production recently and is expected to restart in late June; Guiyang Yinxing slightly lowered its scheduled production; Inner Mongolia Chifengshan postponed its maintenance to late June and cut output due to equipment breakdown and feedstock shortages; Yunnan Chihong Zn & Ge resumed production as scheduled.

![[Analyse SMM] Données détaillées sur la production chinoise d'acide sulfurique en août](https://imgqn.smm.cn/usercenter/Fxolk20251217171712.jpg)
![Importations de concentré de plomb en repli en août, reprise limitée attendue en septembre [Analyse SMM]](https://imgqn.smm.cn/usercenter/yqTpQ20251217171721.jpeg)
![[SMM Flash] Les prix de l'acide sulfurique dans certaines régions passent sous la barre des 1 000 yuans/tonne](https://imgqn.smm.cn/usercenter/ULCXN20251217171714.jpeg)
