Chinese market reporting on September 1 said mainstream granular sulfur at Zhenjiang Port fell from 8,750 to 7,500 yuan per tonne last week, with the lowest transaction at 7,300 yuan.
The move is nearly 40 percent below the year's high in open telegraph coverage, extending the August 31 ex-works correction that pulled Chinese domestic quotes to CNY 7,400 to 7,600 per tonne.
Hubei Yihua told reporters that falling upstream sulfur costs helped its diammonium phosphate line return to profitability on September 1.
Titanium dioxide producers in the same reporting cautioned that simultaneous product price declines make third-quarter margin direction hard to read from sulfur alone.
Phosphate producers also noted that at current sulfur levels, above roughly 2,400 yuan per tonne, phosphogypsum sulfuric acid routes remain economical and several projects are progressing normally.
Port granular quotes and inland ex-works prices are related but not identical. Zhenjiang is a coastal import and distribution hub, so the correction signals inventory digestion and weaker spot demand on China's largest sulfur market.
For Indian phosphatic names flagged on August 31, the follow-through question is whether the Chinese domestic slide holds long enough to change landed costs after freight, currency, and contract timing.
Coromandel International's Q1 FY27 material costs rose to Rs 4,615 crore from Rs 3,567 crore a year earlier, showing how long high feedstock can sit on the books even when spot markets turn.
For the Vancouver stem, a Chinese domestic easing does not directly cut FOB Pacific quotes, but it changes vessel nomination math when buyers delay purchases or work down port stocks.
Alberta recovered sulfur has been the swing Pacific supply while Middle East seaborne stays impaired. SMM's June Canadian export print showed Indonesia and China still in the destination mix alongside the United States.
USGS Mineral Industry Surveys remain paused on public posting through August, so open trade press and customs-style accounts are the timely demand signals until MIS resumes.
Desk read: September 1 is the first open headline of a Zhenjiang port granular correction after the Hormuz-driven spike. Watch whether Pacific FOB follows with a lag or holds as Canada keeps clearing block inventory into export channels.