Phase 1, Engineering Validation

A Proposal for
na2air

Hair Dryer Fragrance Capsule and Retail Kit

4–6 Weeks

USD $7,500

Provisional, scope and fee firm

01 — Background

na2air & the Engineering Validation Engagement

na2air is a Saudi Arabia based product company founded by Abdulaziz Alnabulsi and Dr. Abdulilah Alnabulsi, both engineers and joint holders of the product intellectual property. The product is RoRoCap, a small disposable fragrance capsule that attaches to the outlet grill of a hair dryer and releases scent into the hair through the warm airflow during normal use.

The capsule is an annular ring, 21mm diameter by 16.5mm height, with perforated intake and exhaust walls and an internal cotton matrix soaked in fragrance oil. It attaches by magnetic fixation: a ferrous washer is press-fit into the capsule base and snaps onto a ring magnet. The product works across hair dryer brands using the magnet directly on metal grills, or a plastic fixator adapter on non-metallic grills. The retail kit contains 3 sealed scented capsules, 1 ring magnet, 1 grill fixator adapter, and a printed user manual, in a retail box with protective inserts.

na2air holds granted patents in the United States, the United Kingdom, the European Patent Office (Unitary Patent), and Singapore. A first pilot run of approximately 1,000 units was produced outside China for market testing, in injection-moulded plastic. Those unit costs were high and are not treated as a useful benchmark for a China-based commercial run. The company has full 2D engineering drawings with tolerances, a bill of materials, a user manual, CAD, and physical samples available. The fragrance oil and chemical formula are owned by na2air and are supplied directly to the factory for filling.

na2air has approached C2W and Shield Works to scale production, to evaluate the existing plastic architecture against a proposed pressed metal capsule design, and to establish a real factory-door unit cost for an initial 5,000 kit validation run, ahead of a 25,000 unit per year forecast. This proposal covers Stage 1 of that program, titled Phase 1, Engineering Validation, following the discovery call held on 15 June 2026 and the NNN agreement currently being put in place between our teams.

This proposal is marked provisional in that the figures in Section 5 are indicative and firm up through Phase 1. The Phase 1 scope and fee set out below are firm. The first technical session, the Engineering Kickoff Workshop in Deliverable 1, aligns the work against the real technical priorities, principally the thermal performance question and the plastic versus metal material decision, before engineering work begins. See Section 10 for the sequence.

02 — Our Preliminary Read on the Product

Our Preliminary Read on the Product

Ahead of Phase 1 engagement, our team has reviewed the brief, the intake form, the discovery call notes, the bill of materials, the engineering drawings, and the user manual. CAD and STEP files will be reviewed on receipt. The following is not the full Phase 1 output, but it is the position from which our engineering work will start.

2.1 The central technical question: real operating temperature

There is a contradiction in the supplied documentation that must be resolved before any material is selected or any unit cost is quoted, and it is the single most important item in Phase 1.

The brief and project summary state that the capsule, its internal matrix, and its seals must withstand operating temperatures up to 200 degrees C and airflow up to 210 km/h without deformation, outgassing, or leakage. The user manual supplied with the same product instructs the end user not to exceed 110 degrees C. The engineering drawings specify PC-ABS as the capsule material, which softens well below either figure, while the brief separately refers to a Nylon 66 GF30 pilot build.

These positions cannot all hold. The true operating temperature the product must survive in normal use drives everything downstream: whether a high-temperature engineering plastic is necessary at all, whether PC-ABS is adequate, whether the pressed metal upgrade is justified on performance grounds or only on cost and perception, the choice of cotton matrix and fragrance carrier, and the sealing method. Phase 1 carries this as a standalone engineering workstream. We will establish the real thermal and airflow envelope at the grill, define the temperature the enclosure and seals must be specified to, and lock the material question against that number rather than against an assumption.

2.2 Where quality, cost, and timeline are won or lost

Material architecture: high-temperature plastic versus pressed metal

This is the comparative evaluation na2air has asked for, and it is effectively two parallel DFM paths. The plastic path covers material grade selection against the confirmed thermal envelope, injection mould tooling strategy for the base, lid, and fixator, and the ferrous washer press-fit. The metal path covers the stamped or formed capsule enclosure, the ferrous base integration, forming tooling, and the cutting die for the capsule containers. Phase 1 produces a ranked recommendation with indicative tooling and per-unit cost direction for each path, so the material decision is made on real manufacturing data.

Magnetic fixation and the ferrous interface

The product function depends on the press-fit ferrous washer holding reliably to the ring magnet through repeated use and through the thermal and airflow load. Phase 1 reviews the washer retention in the base, the magnet specification, and the fixator adapter geometry for non-metallic grills, and confirms the attachment is robust and manufacturable at volume.

Capsule filling, sealing, and assembly

na2air supplies the fragrance oil. The line must die-cut and insert the cotton matrix, dose it with the supplied oil, and seal the capsule. Sealing is by mechanical friction fit, with no glue or ultrasonic welding in the current design. Phase 1 assesses the filling, dosing, and sealing process for repeatability and leak resistance under the operating environment, and sets out the assembly sequence for the 3-capsule retail kit.

Existing tooling from the pilot run

na2air has moulds from the prior non-China pilot build and has asked how these factor in. Phase 1 includes an assessment of whether those tools are usable, transferable, or require replacement for a China-based run, which directly affects the tooling investment in the Development Roadmap.

Fragrance supply options

na2air currently sources fragrance oil from its own suppliers and has asked whether C2W can connect them to a Chinese chemistry lab to consolidate supply. Our working recommendation is to keep the existing supply for the early low-volume runs and benchmark Chinese sources in parallel, so a switch is made on data rather than on assumption. Phase 1 sets out the sourcing options and the benchmarking approach.

Certification and target market scope

na2air is targeting the United States, Europe, and further jurisdictions, each with its own safety and quality requirements for a heated consumer appliance accessory. Phase 1 scopes the applicable certification pathway per target market, including the handling and labelling considerations that come with a fragrance product used in a heated airflow. Execution of testing is routed through external accredited partners and quoted separately.

03 — Volume & Timeline Targets

Program Targets

The following reflects current working assumptions drawn from the intake form, the brief, and the discovery call notes. The figures will be reconciled and validated through Phase 1.

Item	Detail
Prototype Quantity	Approximately 250 units for design and process validation
First Production Run	5,000 retail kits, positioned as a supply chain activation and process validation run
Annual Volume Forecast	Approximately 25,000 units per year
Target Unit Price	$1 to $2 USD long-term at scaled volume, confirmed by na2air as a long-term optimisation target rather than a constraint on the first run; validated through the Phase 1 Indicative Quotation
Target Timeline	2 to 3 months for the same plastic material with new packaging and fixator, or 3 to 5 months for the metal upgrade (indicative, to be confirmed in the Development Roadmap)
Target Markets	United States and Europe primary, with further jurisdictions to follow
Funding Status	Secured

04 — Phase 1, Engineering Validation

Six Phase 1 Deliverables

Phase 1, Engineering Validation is the first paid engagement in the na2air development program. The work is engineering-led: an independent audit of the existing drawings, CAD, and BOM, a focused engineering workstream on the thermal performance and material question, a comparative DFM evaluation of the plastic and metal architectures, an assessment of the existing tooling, supplier engineering engagement with indicative pricing, certification and logistics scoping, and a Development Roadmap that consolidates the output into a costed phase-by-phase pathway to qualified mass production.

Duration: approximately 4–6 working weeks from confirmation.

Phase 1 consists of the following six deliverables.

Engineering Kickoff Workshop

A working technical session with the Shield Works R&D team, not an introductory call. We walk through the product architecture, the existing drawings, CAD, and BOM, the founders' commercial goals, and the thermal and material priorities, and agree the engineering workstreams before work begins.

Independent CAD, Drawing, and BOM Engineering Audit

Written, annotated audit of the supplied 2D drawings, STEP models, and BOM, with specific engineering findings and redline direction. Focus on the capsule base and lid, the perforated walls, the ferrous washer press-fit, the magnet and fixator interface, and the material specification inconsistency identified in Section 2. Output: annotated engineering commentary and a ranked list of recommended design revisions.

Thermal Performance and Material Architecture Workstream

Dedicated engineering workstream on the central technical question. Establishes the real operating temperature and airflow envelope at the hair dryer grill, defines the temperature the enclosure, matrix, and seals must be specified to, and resolves the 200 degrees C versus 110 degrees C contradiction. On that basis, runs the comparative evaluation of the high-temperature plastic architecture against the pressed metal architecture, covering material grade selection, tooling strategy for each path, the ferrous base integration, the sealing method, and indicative tooling and per-unit cost direction for each. Output: documented engineering position with a ranked material recommendation for Phase 2 confirmation.

Preliminary DFM, DFA, and DFX Engineering Assessment

Written assessment covering DFM and DFA on the capsule base, lid, fixator, and ferrous washer, the capsule filling, dosing, and sealing process, the 3-capsule retail kit assembly sequence, an assessment of the existing pilot-run tooling and its usability in China, packaging scope direction, and a structured risk register with mitigations. Preliminary at this stage against analysis and supplier data; full DFM execution, drawing release, and supplier qualification testing sit in Phase 2.

Supplier Engineering Shortlist and Indicative Quotation

Qualified supplier shortlist drawn from our Shield Works supply chain and wider network, with first-round engineering engagement to confirm capability and capacity across injection moulding, metal stamping and forming, magnet supply, cotton matrix supply, filling and sealing, and retail packaging. Fragrance supply options benchmarked against na2air's existing source. Indicative unit pricing for the capsule and the full retail kit at multiple volume tiers, for both the plastic and metal paths, benchmarked against the shortlisted suppliers. Accuracy is subject to the defined level of readiness for manufacture; final unit costs are locked against specific supplier quotes as Phase 2 progresses.

Development Roadmap (Full RTMP)

The 25 to 35 page consolidating document that carries the Phase 1 engineering output forward into Phase 2 and through to qualified mass production. This is the full Route to Market Plan for na2air.

The Development Roadmap will include:

Phase timelines and phase management costs across the full development program.
Shield Works resource allocations and core deliverables across sampling, development, design optimisation (full DFM, DFA, DFX), prototyping, pilot run manufacture, mass production, and scaled production.
Consolidated written output of the Phase 1 engineering work, including the audit findings, the thermal and material workstream output, and the DFX assessment.
Component-level bill of materials with material specifications and qualified supplier direction, for both the plastic and metal paths.
Mechanical and DFM plan for the capsule, fixator, washer, and kit components, with the recommended material path and tooling strategy.
Capsule filling, dosing, and sealing process plan, and the retail kit assembly plan.
Fragrance supply plan with the recommended source and benchmarking outcome.
Certification pathway per target market, with the testing route and indicative cost direction.
Logistics and fulfilment plan, including Amazon FBA prep, barcoding, and paperwork, and warehousing options in China.
Prototyping and iteration plan with validation gates.
Tooling strategy and indicative tooling investment budget, including the assessment of the existing pilot tooling.
Pilot run manufacture plan with QC gating criteria, mass production pathway, packaging direction, and a risk register with mitigations and owner assignments.

Note: Phase 1 is the first phase of the na2air development program. Phase 2 and subsequent development, tooling, certification, and production work is scoped and costed within the Development Roadmap for na2air's approval before any execution begins.

Phase 1 Fee — Engineering Validation

$7,500 USD

Payable in full on project confirmation

05 — Indicative Development Envelope Preview

Indicative Development Envelope Preview

The figures below are preliminary ranges produced from our initial review and our experience with multi-component consumer products manufactured in China. They are shared ahead of the Phase 1 Indicative Quotation so the shape of the investment is clear from the outset. They will be firmed up, detailed, and locked against specific supplier quotes in the Phase 1 output. The ranges below reflect the plastic architecture as the base case; the metal architecture is evaluated in parallel and carries its own tooling profile, confirmed in Phase 1.

Stage	Scope	Timeline	Indicative fee
Engineering refinement and DFM	Audit, thermal and material resolution, DFM on both paths, supplier drawings	4 to 6 weeks	$6,000 to $10,000
Prototype build	First validation prototypes in the confirmed material, approximately 250 units	3 to 5 weeks	$5,000 to $9,000
Prototype iteration (likely)	Second iteration on seal, fit, and any DFM-driven design changes	2 to 4 weeks	$3,000 to $6,000
Injection mould tooling (plastic path)	Multi-cavity tooling for base, lid, and fixator	6 to 10 weeks	$12,000 to $28,000
Metal forming tooling and cutting die (metal path, if selected)	Forming mould for the capsule containers and cutting die, in place of injection tooling	6 to 10 weeks	$10,000 to $24,000
Filling and assembly line setup	Cotton insertion, oil dosing, sealing, and retail kit assembly setup	3 to 5 weeks	$4,000 to $9,000
Pilot run (5,000 kits)	Validation production run, real unit economics baseline, marketing samples	3 to 4 weeks	Per Phase 1 unit cost
Development total (before mass production)	Indicative envelope, single material path tooled, one prototype iteration	approx. 2 to 5 months	$30,000 to $62,000

Ranges assume a single material path is tooled following the Phase 1 recommendation, plus a single prototype iteration. The envelope excludes the 5,000 kit pilot production cost, fragrance oil (client-supplied), sample shipping, and any third-party testing or certification fees, which are addressed separately in Section 6. The metal and plastic tooling lines are alternatives, not additive; only the selected path is tooled.

5.1 Preliminary risk register

Risk	Likelihood	Impact	Primary mitigation
Real operating temperature differs from the 200 degrees C brief figure, changing material selection and cost	High	High	Thermal workstream in Phase 1 establishes the true envelope and locks material against it before tooling
Specified PC-ABS or chosen plastic deforms or outgasses at the real grill temperature	Medium	High	Material grade confirmed against the validated thermal envelope; high-temperature grades or metal path evaluated
Friction-fit seal leaks fragrance oil under heat and airflow	Medium	Medium	Sealing assessed in DFM; sealing method validated at prototype stage in Phase 2
Existing pilot-run tooling not usable or transferable to China	Medium	Medium	Tooling assessment in Phase 1 confirms reuse, transfer, or replacement before budget is committed
Certification requirements across US, EU, and further markets affect design, labelling, or timeline	Medium	Medium	Certification pathway scoped per market in Phase 1; testing routed through accredited partners
$1 to $2 target unit cost not achievable at 5,000 unit volume	Medium	Low	Client has confirmed the target is long-term and scaled; Phase 1 establishes the real first-run baseline and the trajectory to target

Indicative unit pricing is not included at this stage. The material decision and the resolved thermal envelope materially affect per-unit cost and will not be locked until the Phase 1 work is complete. Unit pricing at multiple volume tiers, for both material paths, will be delivered in the Phase 1 Supplier Engineering Shortlist and Indicative Quotation.

06 — Exclusions

What Sits Outside Phase 1

The Phase 1 fee covers all six deliverables in Section 4, including the engineering work, the audit, the thermal and material workstream, the DFX assessment, supplier engagement, indicative quotation, certification and logistics scoping, and the Development Roadmap. The following are excluded and would be scoped and costed within the Development Roadmap itself, or addressed through external partners coordinated by Shield Works.

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Industrial design refinement or any 3D CAD development work beyond the audit.

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Full DFM execution, engineering drawing release, and supplier qualification testing.

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Prototyping, sampling, and physical testing.

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Tooling and mould costs, including any refurbishment of the existing pilot tooling.

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Certification and accredited test lab fees for the target markets. Pathway guidance is included in the Development Roadmap; execution is routed through external testing partners and quoted separately.

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Fragrance oil supply, which na2air supplies directly to the factory.

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Shipping costs for physical samples or prototypes between China and na2air.

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Patent or utility model filing fees (guidance is included; filing costs are separate).

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Production unit costs for the 5,000 kit pilot run and beyond.

Note on the post-Phase 1 model

once a supplier set is confirmed and production begins, C2W and Shield Works operate as na2air's manufacturing partner. na2air receives a single unit cost per retail kit that covers goods, capsule filling and assembly, quality control, supplier management, packaging, and logistics coordination. These are not billed as separate service fees. The Phase 1 Supplier Engineering Shortlist and Indicative Quotation is designed to establish those unit costs with confidence before any production commitment is made.

07 — Payment Terms

Phase 1 Payment

Stage	Fee	Payment trigger
Phase 1, Engineering Validation	$7,500 USD	Payable in full on project confirmation

08 — Safeguards & Clarifications

How We Keep Phase 1 Honest

Provisional status and engineering priorities

The Phase 1 scope and fee are firm. The figures in Section 5 are indicative and firm up through the Phase 1 work. The Engineering Kickoff Workshop, the first deliverable, is where the Shield Works R&D team aligns the work against the real technical priorities, principally the thermal performance question and the plastic versus metal material decision, so the Phase 1 output is built on the right starting assumptions.

Operating temperature

Phase 1 treats the resolution of the operating temperature contradiction as a priority deliverable. No material or unit cost can be sensibly committed until the real thermal envelope is established. This is the reason engineering work must precede any binding production price.

Scope changes

If requirements change materially during Phase 1 (for example a change in target markets and the associated certification scope, a change in target volumes, or a decision to tool both material paths), we will adjust cost and timeline and agree the change before proceeding.

Quotation accuracy

The Indicative Quotation delivered in Phase 1 is subject to the level of readiness for manufacture. The cost envelope in Section 5 is directional. Final pricing is locked against specific supplier quotes inside the Phase 1 output and refined through Phase 2.

Capsule filling and fragrance handling

na2air supplies the fragrance oil. Phase 1 assesses the filling, dosing, and sealing process and the handling and labelling considerations for a fragrance product used in a heated airflow. Any specialist handling or regulatory testing is identified in Phase 1 and routed through external partners, quoted separately.

Manufacturing routes

Injection moulding and metal forming are delivered through Shield Works' verified partner network under Shield Works as prime contractor and single point of accountability. na2air deals with one commercial counterparty for the all-in supply.

Intellectual property

na2air retains all intellectual property in the product, including design, BOM, and any derivative work produced under our engagement. Shield Works operates within an IP-secure, ISO-certified facility. Work proceeds under the NNN agreement being put in place between our teams, and an NNN covering all third-party suppliers engaged on the project will be in place before any external engagement begins.

Timelines

The 4 to 6 working week Phase 1 estimate assumes reasonable availability for the Engineering Kickoff Workshop and follow-up technical discussions. The 2 to 5 month projection in Section 5 is indicative and assumes a single material path tooled and a single prototype iteration.

09 — Why C2W and Shield Works

Why C2W and Shield Works

Full-time dedicated project manager in our China HQ coordinating all suppliers, engineering resources, and the na2air team, with full visibility on who is making what and where.

In-house R&D, mechanical engineering, DFM and DFX, quality control, and audit resources, led by a mechanical engineer CEO with over 27 years of manufacturing experience and a Head of R&D with an aerospace engineering background.

Over 21 years delivering multi-component consumer products from China, with direct experience across injection moulding, metal stamping and forming, magnet integration, filling and assembly, and retail kit packaging.

IP-secure, ISO-certified manufacturing facility in Zhuhai for assembly, filling, quality control, packaging, and warehousing.

Established supply chain across moulding, metal fabrication, and component supply, with na2air dealing with a single commercial counterparty for the all-in supply.

Logistics and fulfilment handled in-group, including Amazon FBA prep, barcoding, paperwork, and warehousing in China.

Transparent factory selection and direct supplier relationships. No hidden middlemen, no opaque quotes, no surprises on quality.

10 — Next Steps

From Acceptance to Phase 1 Delivery

na2air reviews this proposal and confirms acceptance of the Phase 1 scope and fee. Any questions on scope or sequence can be raised by email beforehand.

C2W issues invoice for $7,500 USD.

On receipt of payment, the NNN is finalised and na2air shares the CAD (STEP), 2D drawings with tolerances, and full BOM with the Shield Works R&D team.

We schedule the Engineering Kickoff Workshop with the Shield Works R&D team. This is the first technical session and sets the engineering priorities: operating temperature and thermal envelope, plastic versus metal material decision, magnetic fixation, capsule sealing and filling, and target market certification scope.

Phase 1 output, including the Development Roadmap, delivered within approximately 4 to 6 working weeks of the Engineering Kickoff Workshop, including the full development program roadmap with costs and timelines for na2air's approval.

This proposal is non-binding at this stage and is intended to give na2air clarity on cost, structure, and what Phase 1 will actually produce. If you are happy with the direction, let us know and we will issue the invoice and get the Engineering Kickoff Workshop scheduled.

Best regards,

Mark Jacobs

CEO, C2W Group / Shield Works

June 2026