CARBOTURA 01 / 17
Technical Overview · Feedstock Provider Briefing

Elemental recycling,
engineered as manufacturing.

Carbotura's Advanced Circular Manufacturing (ACM) platform refines end-of-life material streams into more than 100 refined industrial products — through primary elemental dissociation, not combustion, and not sorting.

Non-NDA Overview·Prepared for Feedstock Provider Leadership·August 2026

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CARBOTURA
02 / 17
Three ways to see end-of-life material — conventional waste industry view, fraction/molecular view, and Carbotura's elemental view compared
CARBOTURA
03 / 17
The feedstock — seen as chemistry

What the industry classifies as MSW is a periodic-table inventory.

There is no special "waste element" on the periodic table. Just 16 elements account for over 99% of the municipal solid waste (MSW) stream by mass — and every industry classification is simply a different elemental recipe of the same table.

The 16 core elements — >99% of MSW by mass (EPA / ASTM characterization, dry basis)
C
Carbon
~48%
O
Oxygen
~25%
H
Hydrogen
~6.5%
Si
Silicon
~3%
Ca
Calcium
~3%
Al
Aluminum
~1.5%
N
Nitrogen
~1.5%
Fe
Iron
~1%
S
Sulfur
~0.5%
Cl
Chlorine
~0.5%
Na
Sodium
~0.5%
K
Potassium
~0.4%
Mg
Magnesium
~0.3%
P
Phosphorus
~0.3%
Ti
Titanium
~0.15%
Zn
Zinc
~0.1%
In one ton of the typical mixed MSW-classified stream (dry basis): ≈960 lbs carbon · 500 lbs oxygen · 130 lbs hydrogen · 60 lbs calcium · 60 lbs silicon · 30 lbs aluminum · 20 lbs iron — plus trace strategic metals and REEs.
Industry classifications — different recipes, same table (dominant elements, indicative)
MSW — residential collectionthe average of everything below
C ~48% · O ~25% · H ~6.5% · Si/Ca ~6% · metals & balance
Plastics & film packaginghydrocarbon-dense
C ~81% · H ~13% · O/Cl/additives balance — the richest carbon ore in the stream
Tires (TDM)engineered carbon + steel
C ~70% · steel belt Fe ~15% · H ~7% · S/Zn balance
C&D — construction debrismineral-dense
Si ~30% · Ca ~28% · O ~22% · Fe ~12% · C balance — the glass/mineral/aggregate feed
WEEE — end-of-life electronicsthe technology ore
Fe/Cu ~40% · Al ~22% · C (housings) ~23% · Si + REEs (Nd, Dy) & precious metals in the balance
Organics & biosolidsthe wet fraction
C ~47% · O ~35% · H ~7% · N/P/K balance — nutrient and water chemistry

Elemental data: EPA & ASTM MSW characterization (dry basis), Carbotura Intelligence Hub §12 — the full elemental reference →. Values indicative; composition varies by region and season.

CARBOTURA
04 / 17
The feedstock map

Where the feedstock comes from.

Everything manufactured begins as six raw-material families. At end of life those products become the waste-classified streams your community manages today — and every one of them is accepted ACM feedstock, sorted or unsorted.

THE FORWARD DIRECTION · RAW MATERIAL FAMILIES → PRODUCTS → END-OF-LIFE STREAMS → ACM FEEDSTOCK RAW MATERIAL FAMILIES the same six families ACM returns MANUFACTURED GOODS END-OF-LIFE STREAMS waste-classified ACM FEEDSTOCK Water Industrial Gases Carbon / Hydrocarbons Metals & REEs Silica / Glass / Minerals Aromatics / Petrochemicals Electronics & appliances Vehicles & machinery Packaging & consumer goods Buildings & infrastructure Textiles & furnishings Chemicals & energy products Municipal collection · C&I streams WEEE · end-of-life electronics ASR · end-of-life vehicles C&D · construction debris Tires (TDM) · rubber Plastics · packaging film Textiles · apparel Industrial residues & sludges ACM Feedstock Recyclotron™ gate every stream accepted sorted or unsorted manufactured into products end-of-life discarded ACM runs this map in REVERSE — every end-of-life stream returns to the six raw-material families Forward manufacturing ends in landfill. ACM closes the loop — six refining lines, five valorization grades (the matrix on the refining-families slide).
CARBOTURA
05 / 17
Advanced Circular Manufacturing

Not incineration. Not sorting. Elemental recycling.

ACM treats every incoming stream as a periodic-table inventory. The process performs primary elemental dissociation — no polymer or molecule survives — and refined products are synthesized from the recovered elemental constituents.

What it is
  • A manufacturing platform — feedstock in, refined industrial products out
  • Primary elemental dissociation — materials are taken to their elemental constituents, then rebuilt as products
  • Closed Loop, non-oxidative processing — no combustion chemistry anywhere in the train
  • Self-powering, Island-Mode facilities — grid-independent operation
The four Protocols
  • Pregenesis™ — feedstock reception and preconditioning
  • Regenesis™ — the core dissociation train; the Recyclotron™ reactor is a module within it
  • Regenesis MAX™ — separation and refining of both output streams into finished products
  • Exogenesis™ — legacy-deposit remediation (optional add-on)
What it is not
  • Not incineration — an active nitrogen purge and vacuum keep the vessel absolutely oxygen-free
  • Not waste-to-energy — Carbotura sells refined materials, not power, electricity, or fuel
  • Not a sorting plant — heterogeneous, unsegregated streams are accepted directly
  • Not a waste disposal site — every ton is converted into manufactured products, never buried or stored
CARBOTURA
06 / 17
The process · one reactor, one boundary

Take it apart. Then only separate.

Four protocols, one reactor. Everything left of the Elemental Floor is taken apart to its elements; everything right of it is separated and refined. No input molecule survives the Recyclotron™.

PREPARE & DISSOCIATE SEPARATE & REFINE ELEMENTAL FLOOR MANUFACTURING FEEDSTOCK · UNSORTED · TRANSFERRED UNDER CSA Unsorted MSW Tires Wastewater sludge WTE & coal ash C&D fluff Contaminated recycling Biowaste ASR (auto shredder residue) LEGACY DEPOSITS · EXOGENESIS™ · PROTOCOL 4 Closed landfills Coal-ash ponds Contaminated sites Mining tailings mined & conditioned for Protocols 1-3 PROTOCOL 1 Pregenesis™ Shredding / size reduction Magnetic ferrous separation Liquifact™ liquid-fraction extraction no sorting · no classification ferrous metal drawn off prepared PROTOCOL 2 Regenesis™ Recyclotron™ · Multiphase Microwave Reactor elemental dissociation Inconel 625 · inert nitrogen envelope low vacuum · no combustion primary elemental dissociation No input molecule leaves the reactor. Polymers, PFAS/PFOS, contaminants: resolved to elements. OmniCrude™ Vapor OmniCrude™ Solids direct · no intermediate stage CRSRU secondary reforming Carbon Recovery Syngas Reforming Unit Water Gas Shift shift conversion vapor stream only · stages, not protocols PROTOCOL 3 Regenesis MAX™ separate & refine both streams: elements separated, then refined CIRCULAR MATERIALS WaterCarbon MaterialsMetals & Minerals GlassIndustrial GasesAromatics 100+ manufactured materials graded RC1-RC5 · RevCon™ ~100% input becomes output Right of the floor, nothing is converted. Everything is separated. CRSRU, Water Gas Shift and Regenesis MAX™ separate and refine elemental constituents. No polymer or input molecule is preserved; no output is assembled from a surviving fragment. not molecular · not cracking · not pyrolysis · not gasification · not combustion · not sorting
RevCon™ grades — RC1 Circular Raw Material · RC2 Functional Conversion · RC3 Optimized Circular Materials · RC4 Specialized Circular Material · RC5 Premium Circular Product.
CARBOTURA
07 / 17
The physics — why microwave is different

Three ways to put energy into material.

Pyrolysis heats a vessel to heat what's inside it. Waste-to-energy burns the material itself to raise steam. Carbotura does neither — microwave energy couples directly into the material, heating it from the inside out while the vessel itself is never heated.

Pyrolysis — outside-in HOT WALL cool, slow core fired from outside — heat conducts inward
  • Heat path: wall → inward, by conduction — slow and uneven
  • The trade: many designs burn feed or syngas to fire the vessel — spending product to make heat
  • Result: temperature gradients drive tar formation and inconsistent output
Waste-to-energy — combustion MATERIAL = FUEL BOILER steam → turbine materials oxidize away — ash remains
  • Heat path: the material is the fuel — full oxidation to raise steam
  • The trade: every material's value is destroyed for one product: heat
  • Result: combustion byproducts, ash, and nothing left to refine
Microwave — inside-out 433/915 MHz HOT CORE cool wall N₂ + vacuum · zero oxygen present energy couples into the material — never the vessel
  • Heat path: volumetric — the material heats from within, instantly and uniformly
  • The trade: none — energy goes into bond scission, not into heating steel or making flue gas
  • Result: nothing oxidizes; every element survives to be recovered and refined
Energy efficiency — how much reaches the material
Pyrolysis
~50–60%
Waste-to-energy
~20–25%
Microwave
~80–90%+

Typical ranges from process-engineering and industrial-microwave literature — pyrolysis loses energy to vessel/wall conduction losses (and, in autothermal designs, to burning product just to fire the vessel); waste-to-energy's figure is the well-documented net electrical efficiency of a combustion-boiler-turbine cycle after thermodynamic (Carnot) losses. Microwave's advantage is mechanistic, not incremental: energy couples directly into the material itself rather than through an intermediate vessel-heating or combustion step.

CARBOTURA
08 / 17
Primary elemental dissociation

Inside the Recyclotron™ — the Multiphase Microwave Reactor.

A closed, non-oxidative, vertical thermochemical synthesis and refining vessel. Highly heterogeneous, unsegregated feedstock becomes a standardized internal intermediate (OmniCrude™); final commodity finishing and ISO/ASTM certification happen in downstream separation modules.

433 / 915 MHzApplied energy spectrumIndustrial microwave power at 433 MHz or 915 MHz.
100–800 kWPower scalingOperating envelope with a 600 kW standard applied-energy basis.
75% + 25%Processing inputContinuous feed: 75% preconditioned feedstock, 25% recycled process media.
≤ 650 °CThermal governanceMaximum operating limit prevents vitrification of solid matrices.

Atmospheric boundary control

An active nitrogen purge and vacuum system maintain an absolutely non-oxidative environment — no oxygen means no combustion chemistry and no combustion byproducts, by physics rather than by after-treatment.

Volumetric processing

Microwave coupling heats the material volumetrically — from within the mass itself — rather than from the vessel walls. That is what allows highly mixed, multi-layered feedstock to be processed without upfront mechanical sorting or pre-drying.

TOP FEED & INITIAL CONVERSION FREEBOARD VAPOR CONDITIONING MICROWAVE-ASSISTED FLUIDIZED BED & DISCHARGE 75% preconditioned feedstock + 25% process media (recycled process ash) 433 / 915 MHz 100–800 kW applied, 600 kW standard basis Steam injection OmniCrude™ Vapor — condensable phase to downstream refining ← Rapid dissociation ← Devolatilization ← Vapor conditioning ← Entrained fines ← Solids polishing ← N₂ purge / vacuum closed non-oxidative boundary Retained bed inventory / net discharged solids Carbotura Recyclotron™
CARBOTURA
09 / 17
Reactor architecture

Three zones, one continuous vertical vessel.

Feedstock enters at the top with recycled process media; two output streams leave — OmniCrude™ Vapor from the top, and OmniCrude™ Solids managed metal / mineral solids from the bottom. Both are internal intermediates, never sold as-is.

▲ OmniCrude™ Vapor out (top)·internal intermediate → downstream refining
1

Top feed & initial conversion

Incoming material meets an intense microwave-coupled zone — instantaneous volumetric heating drives rapid bond scission and devolatilization, the start of elemental dissociation.

2

Freeboard vapor conditioning

Rising reactive gases get an optimized short residence time; continuous interaction with suspended mineral fines accelerates vapor simplification and suppresses tar formation catalytically.

3

Fluidized bed & solids discharge

Bottom-injected steam drives fluidization and reactive stripping of residual char; unreacted minerals and unaltered elemental metals discharge continuously through a controlled physical boundary.

▼ Managed metal / mineral discharge (bottom)·unoxidized solids → separation & refining
Process media — four jobs at once, in the same vessel

Microwave-coupled reagent

High-efficiency dielectric susceptor — distributes heat uniformly across a heterogeneous solids matrix.

Catalytic surface

Residual mineral oxides reform hydrocarbon vapors in-flight, suppressing heavy-tar formation.

Steam stripping reactant

Enhances gas–solids contact and converts residual carbon fractions in the lower bed.

Nitrogen isolation barrier

Prevents oxidation entirely — no combustion byproducts to capture afterward.

TOP FEED & INITIAL CONVERSION FREEBOARD VAPOR CONDITIONING MICROWAVE-ASSISTED FLUIDIZED BED & DISCHARGE 75% preconditioned feedstock + 25% process media (recycled process ash) 433 / 915 MHz 100–800 kW applied, 600 kW standard basis Steam injection OmniCrude™ Vapor — condensable phase to downstream refining ← Rapid dissociation ← Devolatilization ← Vapor conditioning ← Entrained fines ← Solids polishing ← N₂ purge / vacuum closed non-oxidative boundary Retained bed inventory / net discharged solids Carbotura Recyclotron™
CARBOTURA
10 / 17
What comes out

Two multiphase streams, one vessel.

The Recyclotron™ performs primary elemental dissociation, resolving feedstock into OmniCrude™ Vapor and OmniCrude™ Solids — both internal intermediates, never sold as-is. Regenesis MAX™ separates and refines each into finished Circular Materials.

OmniCrude™ Vapor — light fraction, from the top
  • BTX aromatics — precise thermal and pressure profiles isolate high-purity benzene, toluene, and xylene fractions
  • Clean, predictable species — volumetric energy transfer prevents secondary recombination, bypassing heavy-tar formation
  • High-purity hydrogen is released from aliphatic C–H cleavage — and consumed internally as Island-Mode process energy. Hydrogen is never sold; it is how the facility powers itself
  • Downstream: CRSRU (Carbon Recovery Syngas Reforming Unit — secondary reforming) and Water Gas Shift (shift conversion) condition the stream before Regenesis MAX™ separates it into finished materials
OmniCrude™ Solids — heavy fraction, from the bottom
  • Engineered carbon — recovered solid carbon upgraded to activated carbons, thermal black, synthetic graphite, and graphene structures
  • Unoxidized metals — aluminum, copper, and steel do not couple destructively with the microwave field; they exit structurally intact, ready for secondary smelting
  • Clean mineral aggregates — glass and mineral fractions pass through under 650 °C unaltered, never vitrified
  • Concentrated strategic elements — organic layers stripped from micro-components and electronic scrap concentrate rare earths (neodymium, dysprosium) and technological metals, ready for magnetic, density, and eddy-current classification
CARBOTURA
11 / 17
The refining families

Six refining lines × five valorization grades.

Downstream of the reactor, Regenesis MAX™ refining lines separate and refine the recovered elements into finished product classes — over 100 refined products across the Circular Materials catalog.

REVERSE VERTICAL INTEGRATION · ONE FEEDSTOCK → 30 REFINED PRODUCT CLASSES (6 REFINING LINES × 5 VALORIZATION GRADES) Feedstock stream in municipal · C&I · plastics · tires · WEEE · biomass ACM Recyclotron™ + CRSRU + Regenesis MAX™ OmniCrude™ Vapor OmniCrude™ Solids RC1 commodity RC2 industrial RC3 purified RC4 high-value specialty RC5 ultra-pure / pharma Water MAX refining line Potable Industrial-DI Softened / distilled Semiconductor 18MΩ Pharma-WFI Gas MAX refining line Industrial N₂ CO/CH₄ syngas Liquefied CO₂ High-purity gases Ultra-pure specialty Carbon MAX refining line Activated C Thermal black Synthetic graphite CNT / graphene Fullerenes / diamond Metal MAX refining line EAF billet steel Hydromet non-ferr Alloy stock REE concentrates Precious metals Glass MAX refining line Container-grade Fiberglass Borosilicate Semiconductor Ultra-pure optical Aromatics MAX refining line BTX Heavy aromatics Refined solvents Specialty chemicals Pharma intermediates BASELINE 6 refining lines × 5 valorization grades = 30 refined product classes from one heterogeneous feedstock stream
CARBOTURA
12 / 17
Value conversion — the revenue inversion

What one ton is worth.

Every legacy option balances its books with public money — gate fees, tax levies, energy credits. None creates a value-added margin from the material itself. ACM converts the same ton into refined manufactured products and pays the community a royalty on it.

Subsidized cost / tonGHG / tonWhat the ton becomesValue-added margin
Landfilling $62/ton U.S. average (2024, +10% YoY; $40–$90 regional) + perpetual closure liability ~0.85 tCO₂e — methane-driven; landfills are a top-3 U.S. methane source Buried permanently — zero recovery None — fee-subsidized
Composting Processing costs, publicly borne; organics only (10–15% of the stream) Low direct — but scope-limited; the other 85% of the stream still emits elsewhere Commodity soil amendment, $30–$100/ton None — cost-subsidized
Anaerobic digestion Processing costs, credit-dependent economics; organics only Low with gas capture — fugitive methane and digestate disposal remain Biogas (credit-dependent) + digestate needing disposal None — credit-subsidized
Recycling (MRF) ~$112/ton single-stream processing (surveyed) + reject disposal — pays twice; ~30% effective Low direct — but ~70% of sorted tons still landfill or combust, carrying those emissions Downcycled commodity bales, degraded each cycle None — fee-subsidized
Waste-to-energy $75–$85/ton gate fees (legacy average), rate-supported power sales ~1 tCO₂e combusted per input ton (~0.4 t fossil-derived) + NOₓ/SOₓ/dioxin controls Commodity electricity (volatile) + ~25% bottom ash to landfill None — fee & rate-subsidized
ACM None — zero public capex; Carbotura pays for feedstock. Community earns Circular Royalty™, $112/ton 30-yr average (indicative) Near-zero by design — no combustion; carbon leaves as product (graphite, carbon black), not as CO₂ 100+ refined Circular Materials, RC1–RC5 — up to $1M+/ton at RC5 Manufacturing margin — unsubsidized
Societal / public value per ton — industry-average $/ton to the public
Landfilling
−$62/ton public cost
Composting
−$55/ton public cost (indicative)
Anaerobic digestion
−$70/ton public cost (indicative)
Recycling (MRF)
−$112/ton public cost
Waste-to-energy
−$75–85/ton public cost
ACM
+$112/ton to community
Average market value per ton, ACM output vs. raw commodity: ACM > Market by $1,650/ton average — blended RC1–RC5 catalog

Cost figures: published U.S. tipping-fee and MRF processing analyses (2024) + the published ACM comparisons. Composting/AD figures are order-of-magnitude estimates. GHG figures: published U.S. waste-sector inventories (indicative per-ton basis). All figures indicative — not an offer; commercial terms are set under a Circular Supply Agreement (CSA).

CARBOTURA
13 / 17
Where the money moves

Every dollar flow, by counterparty.

Cash coming in to Carbotura is highlighted. The Beneficiation Fee and the Circular Royalty™ are separate gross transactions and are never netted.

Carbotura dollar flows by counterparty CARBOTURA Advanced Circular Manufacturing Build-Own-Operate platform Takes transfer of feedstock under the CSA and manufactures Circular Materials. Fee in and royalty out are separate gross transactions. Never netted. ASSET SIDEFeedstock ProviderMunicipality, authority, orcommercial generatorCounterparty to the CSA(Circular Supply Agreement) REVENUE SIDEMaterials BuyersIndustrial counterpartiespurchasing Circular Materialsunder the CMOA ATTRIBUTES SIDEAttribute BuyersEnvironmental attributesunder the CEAA(45X and 6418 transfers) CAPITAL SIDEInvestorsCornerstone Round andrelated instruments Feedstock transfers under the CSAtitle and liability pass to Carbotura Beneficiation Fee (TMC Fee)paid on contracted tonnage Circular Royalty™paid on delivered tonnage Legacy Remediation Royaltyoptional add-on, Exogenesis™ path Circular Materials salesrevenue under the CMOA Circular Materials delivered116 materials, RC1 to RC5 grades Attribute proceedsrevenue under the CEAA Attributes conveyedcounted once, on the same tonnage Capital inpurchase of securities Returns outcontractual revenue participation CASH IN CASH IN CASH IN CASH IN READING THE ARROWS Cash coming in to Carbotura (highlighted) Dollars paid by Carbotura (royalties and returns) Material, title, or attributes moving. No dollars. THREE CONTRACTS, ONE TONNAGE The same physical tonnage is counted once in each of the CSA, CMOA, and CEAA. Gross Input Tonnage is the single per-ton denominator. The three agreements have separate counterparties and do not reference one another.
CARBOTURA
14 / 17
Deployment model — EPC vs DFM

This is not an EPC project. It's a manufactured product.

Carbotura does not operate under an Engineer-Procure-Construct model. ACM Modular Production Units are manufactured products under Design for Manufacturability (DFM) — built to a locked production specification (multiphysics simulation as the a priori spec, 2.5% manufacturing tolerance), replicated for capacity. In EPC every risk runs live at once; in ACM each is retired before the next begins.

VS EPC MODEL — RISKS STACKED SIMULTANEOUSLY ACM MODEL — SEQUENTIAL RISK RETIREMENT LAYER 1 · TECHNICAL RISKS Technology Risk — LIVE ENTIRE PROGRAM Engineering Risk — LIVE ENTIRE PROGRAM Procurement & Supply Risk — LIVE Construction & Field Fabrication Risk — LIVE Commissioning Risk — LIVE Operational Risk — UNMANAGED ALL LIVE AT ONCE COD — Month 42–78 Technology RETIRED Engineering + FMEA RETIRED DFM + Factory Manufacturing RETIRED FAT — Pre-verified RETIRED · Factory Acceptance Test Site Acceptance RETIRED · Verification Protocol Operational — Managed live via CAFI Digital Triplet COD — Month 6–20 (from inventory / queue) LAYER 2 · INSURANCE BURDEN FULL WRAP — ENTIRE PROGRAM DURATION Builder's Risk  ·  Professional Indemnity  ·  Performance Bond  ·  DSU All categories running simultaneously — full program duration COVERAGE DIMINISHES AS EACH RISK IS RETIRED → Design PI Only minimal Factory Factory BR Transit + Install ASI Guarantee + Warranty Only LAYER 3 · BUSINESS PERFORMANCE CERTAINTY PERFORMANCE UNKNOWN UNTIL COD No pre-deployment test possible · DSU insurance required Commissioning is first proof of performance at commercial scale PERFORMANCE VALIDATED BEFORE DEPLOYMENT FAT confirms design spec · DFM compliance proven in factory ASI performance guarantee active from Day 1 of commercial operations RISK MANAGED CONTRACTUALLY — NEVER ELIMINATED EACH RISK RETIRED · INSURANCE ELIMINATED · PERFORMANCE GUARANTEED

For a feedstock provider: the facility arrives as a manufactured, integrated product on a manufacturing schedule — not a construction project whose risk you share. Read the full EPC vs DFM primer →

CARBOTURA
15 / 17
Mass balance discipline

Every ton is accounted for.

~100%
Converted to manufactured outputs
Essentially the entire input stream becomes manufactured product — near-zero residual.
~90% / ~10%
Sold / used internally
Roughly 90% of output mass is sold as Circular Materials; ~10% powers the facility itself (Island-Mode, self-powering).
90%
Volume reduction
Bulk raw feedstock is reduced ~90% by volume on its way to dense, refined commodities.

No upfront sorting or pre-drying

Total volumetric processing eliminates the capital-intensive front end that conventional approaches require — complex, multi-layered feedstock is accepted as delivered.

Strict mass-transfer accounting

System boundaries track the full conversion split between top-exiting vapor fractions and bottom-discharged solids — the same accounting discipline the facility's mass-balance reporting is built on.

CARBOTURA
16 / 17
The partnership

What this means for a feedstock provider.

You supply the feedstock

Your community's end-of-life streams become manufacturing feedstock under a Circular Supply Agreement (CSA) — a long-term supply relationship, not a disposal contract.

Carbotura builds, owns, operates

Under the BOO model Carbotura bears 100% of the capital cost, technology risk, construction risk, and operating risk. The provider has no capital obligation.

A manufacturing facility

The facility operates as manufacturing infrastructure — refined Circular Materials leave by rail and truck as commercial products, the same way any factory ships goods.

Carbotura, Inc. · Technical figures are design-basis values for the ACM Modular Production Unit · Non-NDA overview — the assessment pages above are access-controlled

CARBOTURA 17 / 17
Interior of a Carbotura ACM Manufacturing Center: modular production units, process vessels and containerised material handling under a single clear-span roof.
CARBOTURA
Advanced Circular Manufacturing