China's Copper Demand Slump Is Splitting Global Markets and Squeezing Southeast Asian Buyers

By Siam Sukkhee Trading Co., Ltd — 2026-06-27 — copper market Southeast Asia

A 940 yuan-per-tonne drop in Yangtze River spot copper on June 24 just told the market something it wasn't ready to hear. Chinese domestic demand is collapsing, and everyone else is going to feel it.

Look, when LME copper ticks up and SHFE futures fall hard in the same session, that's not noise. That's a signal. Shanghai spot shed 940 yuan per tonne that day—basically wiped out a week's worth of gains in one shot. Meanwhile London just shrugged and went higher. You don't get divergence like that unless Chinese downstream buyers have stopped showing up entirely.

And they have.

Construction wire. Automotive components. The whole stack of sectors that normally drive copper demand inside China. All of it throttled back. Renewables and energy storage are picking up some of the slack, more or less, but not enough. Not even close. The spot premium data from mid-January onward tells you what's really happening: fabricators aren't restocking anymore. They're running down whatever they already have in the warehouse. I've watched this pattern before, and it never ends well for prices.

The inventory picture makes it worse. Combined LME and SHFE copper stocks hit 745,283 tonnes by March 2026. That's 56% higher than the month before. Let that sit with you for a second. That's not a tight market. That's a market drowning in supply.

Import numbers? China pulled in 16% less unwrought copper and semi-finished product in January and February versus the year before. Producers and traders have stopped betting on demand recovery because, frankly, none has materialized. Goldman Sachs called this back in their 2026 outlook—said prices would face pressure declining from record highs. June just proved them right.

Where This Puts You If You're Buying Copper in Thailand

Here's the problem we're all sitting with: two benchmark prices moving in opposite directions, and you have to guess which one actually reflects your supply chain.

Neither, more or less.

What buyers across the region are doing right now—Vietnam, Thailand, Indonesia, Malaysia, all of them—is buying only what their production schedule requires. No stockpiling. No opportunistic pre-buying on the bet that prices jump. Just rigid-demand procurement. That's the sensible move given the volatility, but it also leaves you exposed. If LME reasserts itself and prices snap higher while you're holding minimal inventory, you pay the premium. Or—actually, wait. I'm getting ahead of myself. Let me recalibrate. If LME stays firm and Chinese demand stays dead, SHFE keeps acting as a ceiling. The divergence holds. In that case, rigid-demand procurement looks like genius.

But what if something flips the picture? Policy stimulus. Construction restart. Fabricators suddenly realizing their inventories ran too thin. The divergence closes fast. Really fast. And the buyers who skipped the stockpile are the ones scrambling to catch up at a premium.

The logic behind rigid-demand is defensible. The risk of over-buying into a weak market outweighs the risk of being short if demand snaps back, especially when China's property and manufacturing sectors are still sending mixed signals. But it demands discipline. The moment you start reading an LME tick as permission to build inventory, you're letting someone else's market conditions drive your procurement decision. That's how you get caught.

Watch Shanghai spot-to-futures, not the LME headline. That's where you'll see Chinese buyers actually coming back. Everything else is just noise.

Tags: SHFE copper, Yangtze River, Southeast Asia manufacturing, LME SHFE copper divergence 2026, China copper demand weakness, copper procurement Southeast Asia