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The report for Vietnam PMI May 2025 can be downloaded here.
Cimigo market research has collected the Vietnam Manufacturing Purchasing Managers Index since 2013. The Vietnam Manufacturing Purchasing Managers Index is compiled by S&P Global from responses to monthly questionnaires sent to purchasing managers in a panel of around 400 manufacturers.
Approach for Vietnam PMI May 2025
The S&P Global Vietnam Manufacturing PMI® is compiled by S&P Global from responses to monthly questionnaires sent to purchasing managers in a panel of around 400 manufacturers. The panel is stratified by detailed sector and company workforce size, based on contributions to GDP. Survey responses are collected by Cimigo Vietnam in the second half of each month and indicate the direction of change compared to the previous month. A diffusion index is calculated for each survey variable. The index is the sum of the percentage of ‘higher’ responses and half the percentage of ‘unchanged’ responses. The indices vary between 0 and 100, with a reading above 50 indicating an overall increase compared to the previous month, and below 50 an overall decrease. The indices are then seasonally adjusted.
The headline figure is the Vietnam Manufacturing Purchasing Managers’ Index™ (PMI). The PMI is a weighted average of the following five indices: New Orders (30%), Output (25%), Employment (20%), Suppliers’ Delivery Times (15%) and Stocks of Purchases (10%). For the PMI calculation, the Suppliers’ Delivery Times Index is inverted so that it moves in a comparable direction to the other indices.
Underlying survey data are not revised after publication, but seasonal adjustment factors may be revised from time to time as appropriate which will affect the seasonally adjusted data series.


Mark Ratcliff - Managing Director
The team at Cimigo are my favourite researchers in South East Asia. They’ve proved adept at tackling the most private and complex personal issues at qualitative research level, not flinching when the client endlessly chopped and changed fieldwork timing, or ramped up the workload without warning. They have recruited the most extraordinarily niche consumers without pause or complaint. Their patience with clients and their flexibility and hard work that went above and beyond what was initially asked of them on two projects relating to sexual behaviour means there is now no other research company we would choose to work with in that part of Asia. The fact they also pulled off a third project for us so well, on men’s relationship with beer and beer advertising, shows they have breadth of expertise— we still quote from the report they produced.
The team at Cimigo are my favourite researchers in South East Asia. They’ve proved adept at tackling the most private and complex personal issues at qualitative research level, not flinching when the client endlessly chopped and changed fieldwork timing, or ramped up the workload without warning. They have recruited the most extraordinarily niche consumers without pause or complaint. Their patience with clients and their flexibility and hard work that went above and beyond what was initially asked of them on two projects relating to sexual behaviour means there is now no other research company we would choose to work with in that part of Asia. The fact they also pulled off a third project for us so well, on men’s relationship with beer and beer advertising, shows they have breadth of expertise— we still quote from the report they produced.

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Minh Thu - Consumer Market Insights Manager

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York Spencer - Global Marketing Director

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Thanyachat Auttanukune - Board of Management

Hamish Glendinning - Business Lead

Thuy Le - Consumer Insight Manager

Richard Willis - Director

Ha Dinh - Project Lead

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Aimee Shear - Senior Research Executive

Dennis Kurnia - Head of Consumer Insights

Tania Desela - Senior Product Manager

Thu Phung - CTI Manager

Linda Yeoh - CMI Manager

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