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On the morning of September 1, the “RatingDog China Manufacturing PMI” — compiled by S&P Global and rebranded from the former “Caixin China Manufacturing PMI” — released its August reading at 51.5, not only holding above the 50-point line separating expansion from contraction but beating market expectations of around 50.9 by a wide margin, and rising notably from 50.9 in July. The figure stood in sharp contrast to the official manufacturing PMI released around the same time (49.8, still in contraction), with the two surveys — which differ in methodology and sample composition — once again showing a split between a sluggish official reading and a buoyant private-sector one, making it one of the most closely watched data points in China's economic calendar that day.

It's worth noting that this index's name has changed over the past year. After Caixin Media's exclusive naming rights expired, Shenzhen-based credit-data firm RatingDog reached an agreement with S&P Global starting in August 2025 to acquire exclusive naming rights, and the index was formally renamed the “RatingDog China PMI.” The survey methodology, sample framework and compiler remain entirely with S&P Global, preserving full statistical continuity with the former “Caixin PMI” — only the naming sponsor changed. Out of habit, many analysts and outlets still refer to it by the old “Caixin PMI” name in their reporting, and the “Caixin Manufacturing PMI” reference used in the original Chinese-language source summary for this story falls into that category; the index's accurate current name is the “RatingDog China PMI.” The index surveys a sample of roughly 430 to 650 companies, skewed toward small and mid-sized, export-oriented private firms, complementing the official PMI's sample, which leans toward larger and state-owned enterprises.

Looking at its trajectory this year, the index rose, pulled back, then rebounded: it hit 51.7 in June before easing to a four-month low of 50.9 in July, a decline the market attributed at the time to shifting external tariff conditions and companies front-loading exports, which pulled forward future orders. Entering August, the index not only stopped falling and stabilized but rebounded sharply to 51.5, returning to a relatively high point within its eight-month run of expansion. As for what specifically drove this rebound, markets are focused on the improvement in new export orders — July data had shown that even as the headline index softened, new export orders returned to expansion and cost pressures eased to a six-month low. If that trend continued or strengthened in August, it would be a key force behind this month's sharp rebound, and would partly validate the earlier market view that “orders are recovering as tariff tensions ease.”

The continued divergence between the official PMI and the RatingDog PMI also carries economic significance worth watching. The official manufacturing survey has broader sample coverage, including many large and mid-sized enterprises and state-owned firms, making it more sensitive to shifts in traditional heavy-asset sectors like infrastructure and real estate. The RatingDog PMI, focused on small and mid-sized private, export-oriented firms, tends to respond more nimbly to changes in external demand and order flexibility. This round of divergence suggests that, against a backdrop of still-soft overall domestic demand and non-manufacturing new orders at a 44-month low, some small and mid-sized exporters have managed a relatively faster recovery through more flexible business strategies and a modest pickup in overseas orders — but that recovery has yet to fully filter through to larger, domestically focused enterprises and the services sector. Economists caution that if this pattern of one survey running “cold” while the other runs “hot” persists, it points to an uneven foundation for China's economic recovery, and that policy will need to keep external trade stable while doing more to boost domestic demand.

For Southeast Asian and Thai industries, the recovery in China's private export manufacturing sector carries practical significance too. Many of China's small and mid-sized exporters are important raw-material buyers and intermediate-goods suppliers within the regional supply chain, and how active their orders are directly affects upstream and downstream enterprises in linked ASEAN countries. If the vitality in private-sector exports reflected in the RatingDog PMI can be sustained, it should help stimulate trade along related supply chains — a potentially positive signal for Thai small and mid-sized businesses in cross-border e-commerce and component supply. Market watchers say they will continue monitoring over the coming months whether the official PMI and the RatingDog PMI begin to converge, which will be an important window for gauging whether China's domestic and external demand can achieve a more balanced recovery.

At the sub-sector level, August's RatingDog PMI rebound was not confined to a handful of industries. Earlier industry surveys had shown that while traditional labor-intensive export sectors such as textiles, apparel, furniture and building materials still faced pressure from overseas destocking, higher-tech manufacturing segments such as electronics and precision instruments saw relatively brisk order activity — echoing signals from the official PMI, where high-tech manufacturing has stayed in expansion. Some coastal export-firm executives told media earlier that inquiries from emerging markets such as Southeast Asia and the Middle East picked up somewhat between July and August, partially offsetting slower demand from traditional European and U.S. markets. That micro-level evidence helps explain this round of recovery in private manufacturing.

Looking ahead, markets will keep a close eye on September's leading economic indicators to judge whether the divergence between the official and RatingDog PMIs in August is a short-term blip or a genuine trend shift. Most institutions believe that if upcoming export data and social-financing figures corroborate a pickup in external demand, it would bolster market confidence in the economy stabilizing in the fourth quarter; conversely, if the RatingDog PMI's rebound isn't backed up by subsequent data, it may prove to be just a one-month fluctuation. Either way, August's combination of a relatively weak official reading alongside a relatively strong private-sector one is another reminder that interpreting China's economic data requires weighing multiple data sources together and cross-checking them to get a fuller picture of what's actually happening on the ground. For Thai and ASEAN businesses, that means trade-outlook assessments toward China should not rest on any single indicator, but should draw on both official and private-sector survey data together to keep pace with shifting supply and demand in the Chinese market.