Market data · Prefabricated, modular & aluminium ceiling trade
Verified market and trade figures for prefabricated buildings, modular and container units, aluminium ceilings, ACP and curtain walls — market size, China export values by HS code, Gulf demand signals and the standards buyers ask for. Every figure links to the original publisher. Compiled by BUILDEX Technology Co Ltd from published sources; last updated 2026-10-06.
Figures marked official come from governments, customs data or standards bodies. Figures marked forecast are the market estimates published by the research house named beside them — we do not blend them into one number, because they disagree.
Key takeaways
Section
Prefab and modular construction is already a nine-figure market in dollar terms, and every major forecaster expects it to roughly double within a decade. The spread between forecasters is the point: they disagree by tens of billions, so quote the range, not one number.
| Measure | Figure | Type | Source (opens the original) |
|---|---|---|---|
| Global modular construction market (Precedence Research) | 2025: 112.54; 2026: 121.02; 2035: 228.66 (CAGR 2026-2035 = 7.35%) USD billion | Research forecast | Precedence Research · 2026-04-27 |
| Global modular construction market size, projected 2035 | 228.66 USD billion | Research forecast | Precedence Research · 2026-04-27 |
| Global modular construction market size, 2025 (second alternate estimate) and 2030 forecast | 109.60 → 142.87 USD billion (2025 → 2030) | Research forecast | MarketsandMarkets · 2026-10 |
| Global modular construction market size, 2025 → 2034 | 107.58 → 186.44 USD billion (2025 → 2034) | Research forecast | Straits Research · 2026-09-18 |
| Global modular construction market (Mordor Intelligence) | 2025: 91.25; 2026: 96.77; 2031: 129.81 (CAGR 2026-2031 = 6.05%) USD billion | Research forecast | Mordor Intelligence · 2026-05-14 |
| Global modular construction market size, 2026 (alternate estimate) | 96.77 USD billion | Research forecast | Mordor Intelligence · 2026-05-14 |
| Global modular construction market size, 2025 (alternate estimate) | 91.25 USD billion | Research forecast | Mordor Intelligence · 2026-05-14 |
| Share of modular construction market held by permanent modular, 2025 | 67.18 % of market revenue | Research forecast | Mordor Intelligence · 2026-05-14 |
| Europe modular construction market size, 2025 → 2030 | 33.70 → 43.99 USD billion (2025 → 2030) | Research forecast | MarketsandMarkets · 2026-10 |
| Saudi Arabia modular construction market (PS Market Research) | 2025: 1,901.0; 2026: 2,025.3; 2032: 2,967.0 (CAGR 2026-2032 = 6.6%) USD million | Research forecast | PS Market Research (P&S Intelligence) · 2026 |
| Global container homes market size, 2026 → 2034 | 75.22 → 126.57 USD billion (2026 → 2034) | Research forecast | Precedence Research · 2026-09-08 |
| U.S. container homes market size, 2024 → 2034 | 18.82 → 36.79 USD billion (2024 → 2034) | Research forecast | Precedence Research · 2026-09-08 |
| Global container homes market size, 2025 → 2034 | 67.80 → 116.51 USD billion (2025 → 2034) | Research forecast | Straits Research · 2026-09-17 |
Section
Trade statistics are the least quoted and most useful part of this subject. Prefabricated buildings travel under HS 9406 and aluminium building structures under HS 7610 — these are the two headings that decide whether a supplier is competing in the same market as you.
| Measure | Figure | Type | Source (opens the original) |
|---|---|---|---|
| China total exports of HS 9406 (prefabricated buildings), 2023 | 2970280884 USD | Official / primary | UN Comtrade (reporter: China, code 156) · 2023 |
| China total exports of HS 9406 (prefabricated buildings), 2024 | 3224671487 USD | Official / primary | UN Comtrade (reporter: China, code 156) · 2024 |
| China exports of HS 9406 to the United States, 2024 | 413081357 USD | Official / primary | UN Comtrade (reporter: China, code 156; partner: USA, code 842) · 2024 |
| China exports of HS 9406 to Saudi Arabia, 2024 | 99246021 USD | Official / primary | UN Comtrade (reporter: China code 156; partner: Saudi Arabia cod · 2024 |
| China exports of HS 9406 to Indonesia, 2024 | 189514087 USD | Official / primary | UN Comtrade (reporter: China code 156; partner: Indonesia code 3 · 2024 |
| United States imports of HS 9406 (prefabricated buildings), 2024 | 848262112 USD | Official / primary | UN Comtrade (reporter: USA, code 842) · 2024 |
| Germany imports of HS 9406 (prefabricated buildings), 2024 | 771002835 USD | Official / primary | UN Comtrade (reporter: Germany, code 276) · 2024 |
| China total exports of HS 7610 (aluminium structures & parts), 2023 | 5949473901 USD | Official / primary | UN Comtrade (reporter: China, code 156) · 2023 |
| Germany imports of HS 7610 (aluminium structures & parts), 2024 | 1249412265 USD | Official / primary | UN Comtrade (reporter: Germany, code 276) · 2024 |
| Saudi Arabia imports of aluminium profiles (HS 7604) | 2024: USD 65,221,514.903(net weight 11,435,724 kg);2023: USD 47,646,268.676(net weight 8,153,486 kg) USD / net kg | Official / primary | UN Comtrade (UNSD) — public preview API · 2024 (data year) |
| Saudi Arabia imports of aluminium structures (HS 7610, used for curtain-wall and ceiling framing) | 2024: USD 231,517,460.345(net weight 35,702,587 kg);2023: USD 113,267,564.368(net weight 11,958,224 kg) USD / net kg | Official / primary | UN Comtrade (UNSD) — public preview API · 2024 (data year) |
| UAE imports of aluminium profiles (HS 7604) | 2023: USD 128,413,361.223(net weight 35,745,843 kg);2022: USD 116,717,372.468 USD / net kg | Official / primary | UN Comtrade (UNSD) — public preview API · 2023 (data year) |
| UAE imports of aluminium structures (HS 7610) | 2023: USD 96,570,509.535(net weight 18,782,246 kg);2022: USD 91,850,168.964 USD / net kg | Official / primary | UN Comtrade (UNSD) — public preview API · 2023 (data year) |
Section
China's share of construction and of aluminium fabrication is the reason a buyer can source a full ceiling or modular package from one country — and the reason input costs move the way they do.
| Measure | Figure | Type | Source (opens the original) |
|---|---|---|---|
| China value added of construction enterprises, 2024 | 8994.9 billion yuan | Official / primary | National Bureau of Statistics of China (NBS), 2024 Statistical C · 2025-02-28 |
| China floor space of buildings completed, 2024 | 737.43 million square metres | Official / primary | National Bureau of Statistics of China (NBS), 2024 Statistical C · 2025-02-28 |
| China value added of construction enterprises, 2025 | 8642.5 billion yuan | Official / primary | National Bureau of Statistics of China (NBS), 2025 Statistical C · 2026-02-28 |
| China floor space of buildings completed, 2025 | 603.48 million square metres | Official / primary | National Bureau of Statistics of China (NBS), 2025 Statistical C · 2026-02-28 |
| China 2024 aluminium fabricated products output (year on year) | 4900 million tonnes (49.0 Mt);+4.4% YoY million tonnes (Mt); year-on-year % | Official / primary | China Nonferrous Metals Industry Association (CNFA) · 2025-02-28 |
| China 2024 aluminium product exports, 1-11 month period (sheet and strip / foil / extruded profiles) | sheet and strip 316 (x10,000 t, +25.0%), foil 144 (x10,000 t, +19.7%), extruded profiles 115 (x10,000 t, +12.1%) x10,000 tonnes; year-on-year % | Official / primary | China Nonferrous Metals Industry Association (CNFA) · 2025-01-07 |
| China 2024 output of ten non-ferrous metals (year on year) | 7919 million tonnes (79.19 Mt);+4.3% YoY million tonnes (Mt); year-on-year % | Official / primary | China Nonferrous Metals Industry Association (CNIA) / gov.cn (Xi · 2025-01-21 |
| Global aluminium market by volume: 2034 forecast;Asia-Pacific share | 108.4 Million Tons (2034);CAGR 4.06%;Asia-Pacific 60.0% (2025) million tonnes (Mt); growth %; share % | Research forecast | IMARC Group · 2026-06-09 |
| World primary aluminium smelter production, 2024 estimate | 72000 thousand tonnes | Official / primary | U.S. Geological Survey (USGS), Mineral Commodity Summaries 2025 · 2025-01 |
| Average U.S. market spot price of aluminium ingot, 2024 | 130 US cents per pound | Official / primary | U.S. Geological Survey (USGS), Mineral Commodity Summaries 2025 · 2025-01 |
| Total world crude steel production, 2024 | 1882.6 million tonnes (Mt) | Official / primary | World Steel Association (worldsteel) · 2025-01-24 |
| China crude steel production, 2024 | 1005.1 million tonnes (Mt) | Official / primary | World Steel Association (worldsteel) · 2025-01-24 |
| Global apparent steel use per capita, 2024 | 214.7 kg per person | Official / primary | World Steel Association (worldsteel), 'World Steel in Figures 20 · 2025 |
| Global aluminium demand: 2020 → 2030 forecast (construction segment increment) | 86.2 Mt (2020) → 119.5 Mt (2030),requires an additional 33.3 Mt; construction segment +4.6 Mt million tonnes (Mt) | Research forecast | International Aluminium Institute (IAI) · 2022 |
Section
The Gulf is the world's most concentrated construction pipeline for a buyer of modular buildings, ceilings and facades: a single region with state-backed projects, published housing targets and monthly permit data.
| Measure | Figure | Type | Source (opens the original) |
|---|---|---|---|
| GCC construction market size (Mordor Intelligence) | 2025: 332.64; 2026: 350.79; 2031: 454.12 (CAGR 2026-2031 = 5.30%) USD billion | Research forecast | Mordor Intelligence · 2026-06-30 |
| GCC construction market size (IMARC) | 2025: 154.35; 2026: 161.61; 2034: 233.44 (CAGR 2026-2034 = 4.70%) USD billion | Research forecast | IMARC Group · 2026-09-08 |
| GCC construction market size (PS Market Research) | 2025: 167.3; 2026: 174.2; 2032: 233.4 (CAGR 2026-2032 = 4.9%) USD billion | Research forecast | PS Market Research (P&S Intelligence) · 2026 |
| Saudi Arabia's share of the GCC construction market | 40.60% (2025), and growing at a 5.52% CAGR to 2031 % of GCC construction market | Research forecast | Mordor Intelligence · 2026-06-30 |
| Saudi Arabia construction market size (Mordor Intelligence) | 2025: 78.60; 2026: 82.80; 2031: 101.83 (CAGR 2026-2031 = 4.22%) USD billion | Research forecast | Mordor Intelligence · 2026-08-10 |
| Saudi Arabia construction market size (IMARC) | 2025: 101.4; 2034: 140.4 (CAGR 2026-2034 = 3.6%) USD billion | Research forecast | IMARC Group · 2026-07-28 |
| UAE construction market size (Mordor Intelligence) | 2025: 120.82; 2026: 127.13; 2031: 167.27 (CAGR 2026-2031 = 5.64%) USD billion | Research forecast | Mordor Intelligence · 2026-06-10 |
| UAE construction market size (TechSci Research) | 2024: 66.89; 2030: 96.06 (CAGR 2025-2030 = 6.06%) USD billion | Research forecast | TechSci Research · 2026-04 |
| UAE construction market size (IMARC) | 2025: 45,826.19; 2034: 69,022.54 (CAGR 2026-2034 = 4.66%) USD million | Research forecast | IMARC Group · 2026-05-26 |
| Dubai's share of the UAE construction market | 47.2% (2025) % of UAE construction market | Research forecast | Mordor Intelligence · 2026-06-10 |
| Saudi Arabia tracked project pipeline (SCAVO) | USD 4 trillion+ total tracked project value; 19,000+ projects tracked; 12,500+ construction companies; USD 59+ billion of contracts awarded in 2025 USD (project pipeline) | Official / primary | SCAVO (Saudi Contractors Authority × Ventures Onsite) · 2026 |
| Gigaproject commitments (NEOM / Red Sea / Diriyah Gate) and the 2030 housing target | NEOM USD 500 billion; Red Sea USD 15-16 billion; Diriyah Gate USD 20 billion; 660,000 residential units targeted by 2030 USD billion / residential units | Research forecast | IMARC Group · 2026-07-28 |
| Saudi Electricity Company (SEC) grid investment plan | USD 126 billion ( through 2030) USD billion | Research forecast | Mordor Intelligence · 2026-08-10 |
| PIF PIF investment in NEOM, the Red Sea and Qiddiya (2024-2026) | USD 40 billion USD billion | Research forecast | Mordor Intelligence · 2026-08-10 |
Section
Saudi Arabia publishes more usable construction data than any other Gulf state, which makes it the market where a supplier can argue from numbers instead of from brochures.
| Measure | Figure | Type | Source (opens the original) |
|---|---|---|---|
| Saudi Arabia monthly building permits (GASTAT) | 2026 5,056 permits in May (down 33.3% from 7,584 in May 2025; and 25.7% below April 2026 at 6,803) permits issued / month | Official / primary | GASTAT (General Authority for Statistics, Saudi Arabia) · 2026 |
| Saudi Arabia homeownership rate (Vision 2030) | 66.24% in 2025 (annual target 65%; 2030 target 70%) % homeownership | Official / primary | Saudi Vision 2030 (official Annual Report 2025) · 2025 (Annual Report 2025) |
| Saudi families owning their home (Vision 2030) | 2025 851.3 thousand households (63.4 thousand in 2019 rising to 851.3 thousand in 2025) thousand households | Official / primary | Saudi Vision 2030 (official Annual Report 2025) · 2025 (Annual Report 2025) |
| Saudi Vision 2030 annual housing delivery target | 300,000 units a year (modular delivery named as a way to hold the schedule) housing units / year | Research forecast | Mordor Intelligence · 2026-05-14 |
| Sakani Sakani housing programme committed supply | 2 million homes homes | Research forecast | Mordor Intelligence · 2026-08-10 |
| Saudi Arabia modular construction market (PS Market Research) | 2025: 1,901.0; 2026: 2,025.3; 2032: 2,967.0 (CAGR 2026-2032 = 6.6%) USD million | Research forecast | PS Market Research (P&S Intelligence) · 2026 |
Section
Ceilings and facades are specified and bought separately from the building itself, which is why they have their own market data — and why the MEA share matters if you sell into the Gulf.
| Measure | Figure | Type | Source (opens the original) |
|---|---|---|---|
| Global suspended ceiling systems market: 2025 to 2036 forecast | 7.99 (2025) → 12.97 (2036);CAGR 4.5% USD billion( billion); growth % | Research forecast | Future Market Insights (FMI) · 2026-03-24 |
| Global suspended ceiling systems market: 2025 to 2032 forecast | 9.84 (2025) → 14.60 (2032);CAGR 5.8% USD billion; growth % | Research forecast | Strategic Market Research (SMR) · 2026 |
| Suspended ceiling systems, metal segment: 2025 share, value and growth rate | 24.0% share / USD 2.36 billion (2025);CAGR 6.5% % and USD billion; growth % | Research forecast | Strategic Market Research (SMR) · 2026 |
| Global metal ceilings market: 2033 forecast and growth rate | US$ 7.0 billion (by 2033);CAGR 6.2% (2026–2033) USD billion; growth % | Research forecast | Fairfield Market Research · 2026 |
| Global aluminium composite panel (ACP) market: 2024 → 2032 forecast | 7.2 (2024) → 11.4 (2032);CAGR 5.9% USD billion; growth % | Research forecast | GMI Research · 2025-05 |
| Global aluminium composite panel market: 2025 → 2031 forecast;PVDF coating share | 8.61 (2025) → 12.33 (2031);CAGR 6.16%;PVDF coating 65.20% (2025) USD billion; growth %; share % | Research forecast | Mordor Intelligence · 2026 |
| Global aluminium composite panel market: 2025 → 2035 forecast | 9.17 (2025) → 17.39 (2035);CAGR 6.6% USD billion; growth % | Research forecast | Market Research Future (MRFR) · 2026-09-22 |
| Global curtain wall market: 2025 → 2035 forecast | 47.4 (2025) → 95.0 (2035);CAGR 7.2% USD billion; growth % | Research forecast | Future Market Insights (FMI) · 2025-08-04 |
| Global aluminium curtain wall market: 2025 → 2034 forecast | 42.01 (2025) → 91.08 (2034);CAGR 9.0% USD billion; growth % | Research forecast | Polaris Market Research · 2026-08 |
| GCC aluminium extrusion market (MarketsandMarkets) | 2025: 7,406.8; 2030: 10,231.8 (CAGR 2025-2030 = 6.7%) USD million | Research forecast | MarketsandMarkets · 2026-08 |
| Global aluminium extrusion market (MarketsandMarkets) | 2024: 111.88; 2030: 166.65 (CAGR 2025-2030 = 7%) USD billion | Research forecast | MarketsandMarkets · 2026-02 |
| Middle East aluminium extrusion market (Mobility Foresights) | 2025: 9.2; 2031: 14.8 (CAGR = 8.3%) USD billion | Research forecast | Mobility Foresights · 2025 |
| Saudi Arabia aluminium market (Expert Market Research) | 2025: 2.50; 2035: 3.85 (CAGR = 4.40%) USD billion | Research forecast | Expert Market Research · 2026-07-23 |
| Saudi Arabia doors and windows market (TechSci Research) | 2025: 5.67; 2031: 7.56 (CAGR 2026-2031 = 4.91%) USD billion | Research forecast | TechSci Research · 2026-06 |
Section
Hotel and commercial pipelines are the earliest public signal of ceiling, facade and fit-out demand: rooms under construction today are panel orders in twelve to eighteen months.
| Measure | Figure | Type | Source (opens the original) |
|---|---|---|---|
| Middle East hotel construction pipeline (Q2 2026) | Middle East total 724 projects / 178,003 rooms; of which Saudi Arabia 387 projects / 105,648 rooms (project count year on year +13%) hotel projects / rooms | Official / primary | Lodging Econometrics · 2026-08-13 |
| Middle East hotel construction pipeline (Q4 2025) | Middle East total 710 projects / 176,402 rooms; of which Saudi Arabia 394 projects / 106,521 rooms (project count year on year +25%) hotel projects / rooms | Official / primary | Lodging Econometrics · 2026-02-12 |
| Metal ceilings: Middle East and Africa share and demand concentration | 2026 MEA holds about 5% of the global metal ceilings market (the smallest region), demand concentrated in the Gulf (Saudi Arabia / UAE / Qatar) % of global metal ceilings market | Research forecast | Fairfield Market Research · 2026-10 |
| Dubai population (planning baseline) | 2020 3.3 million (up from 40,000 in 1960, an 80-fold increase) million residents | Official / primary | UAE Government official portal (u.ae) · 2021 (Dubai 2040 plan launched 2021) |
Section
Every one of these is a document a buyer, a consultant or a customs broker can request by number. If a quotation cannot answer with a standard number, it loses to one that can.
| Measure | Figure | Type | Source (opens the original) |
|---|---|---|---|
| Mechanical properties of aluminium sheet and strip, EN 485-2:2016+A1:2018 | EN 485-2:2016+A1:2018 standard number | Standard / regulation | BSI (British Standards Institution) Knowledge · 2018-10-31 |
| Fire classification of construction products, EN 13501-1:2018 | EN 13501-1:2018(including 2019 corrigendum TC) standard number | Standard / regulation | BSI Knowledge; standard published by CEN · 2019-01-31 |
| Coating of aluminium and aluminium alloy for architecture, EN 12206-1:2021 | EN 12206-1:2021((supersedes EN 12206-1:2004) standard number | Standard / regulation | BSI Knowledge; standard published by CEN · 2021-05-31 |
| Suspended ceilings standard EN 13964:2014 (requirements and test methods) | EN 13964:2014((supersedes EN 13964:2004) standard number | Standard / regulation | European Commission (CPR 2011 harmonised standards list) / CEN · 2014 (standard); 2016-04-08 (OJ citation) |
| ASTM B209/B209M Standard specification for aluminium and aluminium-alloy sheet, plate and strip | ASTM B209 / B209M standard number | Standard / regulation | ASTM International · 2021 (latest edition B209/B209M-21a) |
| ASTM E84 Standard test method for surface burning characteristics of building materials | ASTM E84 (latest edition E84-26a) standard number | Standard / regulation | ASTM International · 2026 (latest edition E84-26a) |
| AAMA 2605-22 Voluntary specification for high-performance organic coatings on aluminium extrusions and panels | AAMA 2605-22 standard number | Standard / regulation | FGIA (Fenestration and Glazing Industry Alliance) · 2022 |
| Classification for burning behaviour of building materials and products, GB 8624-2012 | GB 8624-2012 standard number | Standard / regulation | State Administration for Market Regulation / Standardization Adm · 2012-12-31 (in force 2013-10-01) |
| Aluminium composite panels for curtain walls, GB/T 17748-2016 | GB/T 17748-2016 standard number | Standard / regulation | State Administration for Market Regulation / Standardization Adm · 2016-10-13 (in force 2017-09-01) |
| Aluminium panels for architectural decoration, GB/T 23443-2024 | GB/T 23443-2024 standard number | Standard / regulation | State Administration for Market Regulation / Standardization Adm · 2024-10-26 (in force 2025-05-01) |
| Wrought aluminium and aluminium alloy sheet and strip, Part 2: mechanical properties, GB/T 3880.2-2024 | GB/T 3880.2-2024 standard number | Standard / regulation | State Administration for Market Regulation / Standardization Adm · 2024-04-25 (in force 2024-11-01) |
| Chemical composition of wrought aluminium and aluminium alloys, GB/T 3190-2020 | GB/T 3190-2020 standard number | Standard / regulation | State Administration for Market Regulation / Standardization Adm · 2020-03-31 (in force 2021-02-01) |
| Wrought aluminium and aluminium alloy extruded profiles for general engineering, GB/T 6892-2023 | GB/T 6892-2023 standard number | Standard / regulation | State Administration for Market Regulation / Standardization Adm · 2023-09-07 (in force 2024-04-01) |
| EU Carbon Border Adjustment Mechanism (CBAM): aluminium in scope, and when it takes effect | Aluminium is among the sectors covered;2026-01-01 onwards, in the definitive regime scope of regulation / effective date | Standard / regulation | European Commission - Taxation and Customs Union (official CBAM · 2026-01-01 (definitive regime applies) |
Questions
Forecasters put the global modular construction market between USD 91.25 billion and USD 112.54 billion for 2025, reaching USD 228.66 billion by 2035 on the higher forecast. The spread is real and worth quoting: two research houses disagree by more than USD 20 billion on the same year.
HS 9406 covers prefabricated buildings. China exported USD 3.22 billion under HS 9406 in 2024. Aluminium building structures — the frames behind curtain walls and ceilings — travel under HS 7610, where China exported USD 5.95 billion.
Saudi Arabia imported USD 231.5 million of HS 7610 aluminium structures in 2024 and USD 65.2 million of HS 7604 profiles; the UAE imported USD 96.6 million of HS 7610 in 2023. These are the two headings a ceiling or facade quote competes under.
5,056 building permits in May 2026, published monthly by GASTAT. Permit counts are the earliest public signal that interior and facade orders are coming.
Typically the coating standard (EN 12206-1 or AAMA 2605), the fire classification (EN 13501-1, ASTM E84 or GB 8624), the panel standard (EN 485-2, ASTM B209 or GB/T 3880.2) and the suspended-ceiling standard EN 13964. Each is a document, not a description — the number is what gets checked.
Yes. Aluminium is one of the sectors inside the EU's Carbon Border Adjustment Mechanism, which moved from the transitional phase to the definitive regime on 1 January 2026. Exporters into the EU report embedded emissions.
Ceilings and facades are procured as separate packages from the building contract. The global suspended ceiling systems market is around USD 8–10 billion, and metal is about 24% of it — a fraction of the construction market and a different buying process.
Saudi Arabia. Its tracked project pipeline is over USD 4 trillion, the housing programme targets 300,000 units a year, and the state has named modular construction as a way to hold delivery schedules.
Method
Method. Each figure was taken from the publisher's own page or dataset — customs APIs (UN Comtrade), national statistics offices (China NBS, Saudi GASTAT, UAE government), industry bodies (worldsteel, USGS, China Nonferrous Metals Industry Association) and standards bodies (CEN/BSI, ASTM, FGIA, China's national standards portal). Research-house forecasts are quoted as published and labelled as forecasts. Every link on this page was opened and checked on the date of the last update; figures that could not be verified against the source were removed rather than rounded.
Cite this page. Suggested citation: BUILDEX Technology Co Ltd, “Prefabricated, modular and aluminium ceiling statistics”, updated {TODAY}. https://buildextechnology.com/statistics/prefab-and-modular-building-trade/ The page is refreshed as new official data is published; the URL stays the same, so a link to it stays valid. You may quote the figures with attribution to this page and to the original publisher named in each row.
Corrections. If a figure here does not match its source, write to info@buildextechnology.com and it will be corrected with a note.