STP&I Public Company Limited
STPI
Rank in Stocks
#14872
STP&I Public Company Limited, established in Bangkok, Thailand, in 1975,... STP&I Public Company Limited, established in Bangkok, Thailand, in 1975, operates as a diversified industrial entity. The company's core business involves the fabrication of steel structures, manufacturing, and selling boilers and pressure vessels, with its reach extending throughout Thailand, Japan, Spain, England, and other global regions. Their extensive steel structure portfolio encompasses significant projects for various sectors. This includes providing essential components for infrastructure such as airports, exhibition centers, and multi-story commercial buildings. For industrial clients, STP&I designs and constructs facilities for factories, automotive production plants, and steel mills. In the energy sector, they supply crucial elements like boiler frames, turbine buildings, and equipment support structures for power generation plants. The petrochemical industry also benefits from their expertise in refineries, gas separation plants, and aromatic processing facilities. Furthermore, the company specializes in constructing diverse bridge types, including main structural components, decking for cable-stayed bridges, flyovers, pipe bridges, and jetties, complete with built-in cable anchor structural decks. Beyond large-scale fabrication, STP&I delivers comprehensive piping pre-fabrication and on-site erection services for a wide array of industrial settings, including power plants, oil refineries, petrochemical complexes, and offshore processing units. They are also proficient in producing both offshore and onshore modular constructions. The company's engineering division offers specialized design services for steel-to-steel connections, alongside detailed shop and erection drawings. Their integrated fabrication process covers everything from cutting, rolling, and drilling to assembly, welding, rigorous inspection, surface treatment (blasting and painting), and final packing and delivery. Additionally, they undertake complete plant and module construction projects and provide crucial construction support services. STP&I has also significantly diversified its operations. This expansion includes the manufacturing, sale, and rental of construction machinery; generating and distributing electricity derived from waste materials; cultivating and distributing hemp-based products; providing municipal solid waste management solutions; engaging in property development; offering logistics services; leasing commercial properties like land, office spaces, and warehouses; and operating automated fuel stations for communities. The company, which was originally known as Sino-Thai Pressure Vessel & Iron Works, officially adopted its current name, STP&I Public Company Limited, in 1995.
Share Price
$0.16319564
Last synced: 2026-11-10
Market Cap
$295.75M
Change (1 day)
3.81%
Change (1 year)
33.53%
Country
Stock data: Financial Modeling PrepΒ·Updated Β·Not investment adviceΒ·How we calculate this
Trade STP&I Public Company Limited (STPI)
Category
Industrials
Operating Margin for STP&I Public Company Limited (STPI)
Operating Margin as of November 2026 TTM: 3.91%
According to STP&I Public Company Limited's latest financial reports, its current operating margin (TTM) is 3.91%. At the end of 2025 the company had an operating margin of 9.82%.
Operating Margin history for STP&I Public Company Limited from 2004 to 2026
Operating Margin at the end of each year
| Year | Operating Margin | Change |
|---|---|---|
| 2026 (TTM) | 3.91% | -60.18% |
| 2025 | 9.82% | 8.03% |
| 2024 | 9.09% | 178.83% |
| 2023 | 3.26% | 3,522.22% |
| 2022 | 0.09% | -98.23% |
| 2021 | 5.08% | -120.93% |
| 2020 | -24.27% | -124.06% |
| 2019 | 100.89% | -278.79% |
| 2018 | -56.43% | -67.32% |
| 2017 | -172.69% | -1,317.84% |
| 2016 | 14.18% | -49.16% |
| 2015 | 27.89% | 12.87% |
| 2014 | 24.71% | -25.57% |
| 2013 | 33.20% | -8.21% |
| 2012 | 36.17% | -492.30% |
| 2011 | -9.22% | -122.40% |
| 2010 | 41.16% | 168.67% |
| 2009 | 15.32% | 9.59% |
| 2008 | 13.98% | 1,105.17% |
| 2007 | 1.16% | -92.12% |
| 2006 | 14.73% | 143.07% |
| 2005 | 6.06% | -245.32% |
| 2004 | -4.17% | 0.00% |
Operating Margin for similar companies or competitors
| Company | Operating Margin | Operating Margin Difference | Country |
|---|---|---|---|
| 16.62% | -95.75% |
US
|
|
| 20.78% | -94.69% |
US
|
|
| 11.12% | -97.16% |
CN
|
|
| 6.24% | -98.40% |
CN
|
|
| 18.64% | -95.23% |
IN
|
What is a company's Operating Margin?
The operating margin is a key indicator to assess the profitability of a company. Higher operating margins are generaly better as they show that a company is able to sell its products or services for much more than their production costs. The operating margin is calculated by dividing a company's earnings by its revenue.
Questions about STP&I Public Company Limited's operating margin
What is STP&I Public Company Limited's operating margin?
STP&I Public Company Limited's operating margin is 3.91%, as of Nov 2026.
What was STP&I Public Company Limited's operating margin in 2025?
In 2025, STP&I Public Company Limited's operating margin was 9.82%, compared with 9.09% in 2024.
How has STP&I Public Company Limited's operating margin changed since 2020?
From 2020 to 2025, STP&I Public Company Limited's operating margin was highest in 2025 (9.82%) and lowest in 2020 (-24.27%).
How does STP&I Public Company Limited's operating margin compare with similar companies?
STP&I Public Company Limited's operating margin (3.91%) is lower than that of all 5 similar companies listed above. The highest among them is Mueller Industries, Inc., with 20.78%.