China makes a huge share of the world’s manufactured goods, so the prices its factories charge matter far beyond its borders. Each month, China’s producer price index offers a snapshot of those prices. For traders, it is an early signal for commodity demand, global inflation and the fortunes of mining companies, including several of the biggest names on the FTSE 100.
What China’s PPI measures
The producer price index, or PPI, tracks the prices factories receive for their goods when they leave the factory gate. China’s National Bureau of Statistics publishes it monthly, usually alongside the consumer price index, around the ninth or tenth of the following month.
The index covers a wide range of products, from raw materials such as coal, steel and chemicals to finished industrial goods. Because heavy industry has a large weight, China’s PPI is closely linked to commodity prices and to the health of construction and manufacturing.
Why it matters for commodities
China is the world’s largest consumer of many raw materials, including iron ore, copper and coal. When Chinese factory prices are rising, it often signals strong demand from industry and construction, which supports commodity prices. When PPI is falling, it can point to weak demand, excess capacity or both.
The link runs both ways. Global commodity prices feed into China’s input costs, so a jump in oil or metals prices can lift PPI even if demand is soft. Traders try to separate the two: rising prices driven by demand are more encouraging for growth than rising prices driven purely by costs.
Exporting inflation or deflation
Because China sells so many goods abroad, its factory prices influence inflation in other countries. When Chinese PPI is rising quickly, as it did in 2021, the cost of imported goods tends to rise elsewhere, adding to inflation in Europe, the UK and the US.
When Chinese PPI is negative for a long stretch, the opposite happens. Cheaper Chinese goods can help bring down goods inflation abroad. China’s PPI spent much of 2023 and 2024 below zero, reflecting weak domestic demand and strong production capacity, which some economists described as China exporting deflation. Our guide to what deflation is and why central banks fear it explains why that matters.
This can also create trade tension. When cheap Chinese goods flood other markets, governments may respond with tariffs or other barriers to protect domestic industries.
What it means for miners
Mining shares are highly sensitive to Chinese demand. Companies such as Rio Tinto, BHP, Anglo American and Glencore earn a large share of revenue from selling raw materials that end up in Chinese factories and construction sites. A run of weak Chinese PPI figures can weigh on their shares, while signs of recovery can lift them.
Because these companies make up a meaningful part of the FTSE 100, Chinese data can move the UK’s main index more than many people expect. We look at that link in what drives FTSE 100 mining shares.
Reading the data alongside other signals
PPI is most useful when used alongside other Chinese indicators. The official and private manufacturing purchasing managers’ indices give an earlier signal of factory activity. Industrial profits show whether companies can turn sales into earnings. Credit data reveals whether the economy is getting enough financing. Consumer price inflation shows whether weak demand is spreading to households.
Policy matters too. Beijing often responds to weak data with stimulus, such as infrastructure spending or support for the property sector. Markets can rally on expectations of stimulus even when PPI is still negative, because traders look ahead to what the support might achieve.
What traders watch
On release day, traders compare the PPI figure with forecasts and with the previous month. The direction of change often matters more than the level. A smaller decline, for example, can be seen as a sign that the worst is passing.
They also watch how commodity prices, the Australian dollar and mining shares react. The Australian dollar is particularly sensitive to Chinese demand given Australia’s heavy exports of iron ore and coal.
The bottom line
China’s factory prices offer a monthly window into the world’s workshop. They influence commodity prices, global inflation and the shares of major miners. Treating them as part of a wider picture, rather than a single number, is the best way to use them. If you want to test your grasp of global macro links, take the free trader assessment.
