FOUNTAIN VENTURES
FOUNTAIN VENTURES · ACCELERATOR

From PMF to prototype in 3–6 months

From the day you sign we work as one team, toward a single outcome: your EVT built, and you ready to raise your next round. We are a partner in this, not a vendor — everything below is what we do together, phase by phase.

Up to $1MFIRST CHEQUE, CASH AND PROGRAM
3 phasesSF → SHENZHEN → SF
10/batchCOMPANIES PER BATCH
QuarterlyDEMO DAY, SLOT SET WHEN YOU JOIN
01 · THE FOUNDER JOURNEY

Build your product 10× faster.

One compact program: three phases, two continents, 3–6 months from a defined product to a working EVT. The supply chain, the build team and the investors are already in place, so you skip the months and the $1M+ it takes to figure them out alone.

PHASE 1 · SAN FRANCISCO

Define

1–2 MONTHS

Turn the idea into a product that is both fundable and buildable.

  • Week 1 · OnboardingAn in-person kickoff, then modules on company building, US seed fundraising, the China supply chain and hardware 101 — prototype to PVT, BOM and cost.
  • PMF & problem definitionCustomer discovery with real users and buyers, a US and China competitor teardown, and the story pressure-tested with later-stage investors.
  • Product definitionA feasibility review with our build leads and advisor sessions on form. The PRD covers specs, core functions, use cases and BOM, with at least one concept ID.
MILESTONEPRD sign-off
PHASE 2 · SHENZHEN

Build

2–3 MONTHS · LONGER FOR ROBOTICS

On site and hands-on, from the PRD to a working, demoable EVT.

  • Week 1 · Chain tourHuaqiangbei, factories in your category and retail floors, so you learn the chain before you build on it.
  • Week 2 · Build diagnosticThe PRD translated into a hardware path, a supply-chain path, a cost range and the key risks, then locked into a build plan reviewed every week.
  • Prototype roundsElectronics and structural samples, tested on site. A second round runs only if the first one says it should.
  • EVT buildA unit that runs, demos and survives testing.
MILESTONEEVT and design freeze
PHASE 3 · BACK TO SAN FRANCISCO

Raise & Expand

FINAL MONTH

Bring the EVT home, put it on stage and raise the next round.

  • Demo prepPartners back to weekly about a month out, with your quarterly Demo Day slot locked in.
  • The raiseOur investor network opened to you, and help finding a lead.
  • Next build stageThe plan from EVT toward DVT, with our support continuing as you expand.
MILESTONEDemo Day, then graduation
THE COHORT · PHYSICAL AI HOUSE

Phase 2 is on-site by design. You land in the house with the rest of the cohort and the build team, and the sessions and reviews happen in the room you work in.

THE HOUSE
SESSION
COMMUNITY EVENT
02 · THE SHENZHEN ECOSYSTEM

Everything a device needs, inside an hour.

Phase two is in Shenzhen because hardware's 0→1 is not written, it is walked: samples, tooling, vendors. Those things are half an hour apart here and six weeks apart anywhere else.

50 kmTHE COMPLETE ELECTRONICS ECOSYSTEM, INSIDE THAT RADIUS
500+FACTORY AND SUPPLY-CHAIN PARTNERS
60+T1 SUPPLIERS
250COMPONENT MAKERS INDEXED
THE MARKET

Huaqiangbei

Futian, Shenzhen

Square kilometres of component market where the part you need is a walk away rather than a lead time. Week one of the sprint is spent walking it with the build team — that is where supply-chain literacy starts, and you do not get it from a catalogue.

THE FACTORY BASE

Sampling to production

Pearl River Delta

Category factories, tooling shops and solution houses close enough that a sample is a car ride, not a courier. Prototype rounds, EVT and the ramp toward mass production all run inside the same radius.

THE CHAIN ON FILE

250 makers, indexed

Public

Actuators, sensors, hands, structure — searchable by subsystem, part, country and the programmes each one already supplies. It is the same index the sourcing desk works from. Open the map →

03 · ROBOTICS SUPPLY CHAIN

Who actually makes the parts inside a humanoid robot.

250 makers indexed across 15 countries, 140 of them in China — actuators, sensors, hands, structure. Your build plan is drawn from the same index as our robotics supply chain map, so sourcing starts from a list of real factories rather than a search.

China 140 United States 36 Germany 26 Japan 17 South Korea 5 Taiwan 5
BY COUNTRY · BUBBLE AREA IS MAKER COUNT · LINES RUN INTO THE CHAIN
04 · IP & COMPLIANCE

Protected, private, certified.

We conducted due diligence and signed legal agreements with every factory we worked with to clearly define responsibilities, protect intellectual property and confidential information, and reduce legal and operational risks for our portfolio companies.

PATENTS

Your IP, filed and guarded

Patent strategy and filings for your core technology, so what you invent on the way to EVT stays yours.

PRIVACY

Private by design

Microphones, cameras and user data are reviewed alongside the product definition, so the device is built to meet privacy rules such as GDPR and CCPA from the start.

CERTIFICATION

Cleared for every market

FCC, CE, RoHS and whatever else your markets require, planned from EVT onward so certification is never the thing that holds up your launch.

05 · FOUR FROM THE PROGRAM

Where they got to.

Stage is the build stage, not the funding stage — where the hardware stands today.

Cortexa

AI clinical device. Ambient recording for visits.

The device listens through the appointment so the room stays a conversation rather than a transcription exercise. Through the program, and shipping.

SHIPPINGVisit →

Mark

AI bookmark. Reading into personal knowledge.

What you read turns into something you can come back to, instead of a pile of saved links nobody opens twice. Through the program, and shipping.

SHIPPINGVisit →

Sparkring

AI ring. A wake-word-free voice interface.

You talk to it without saying its name first — the hard part is doing that on a ring's power budget. Through the program and into mass production.

IN MASS PRODUCTIONVisit →

Banrai

AI pocket bible. An e-ink faith device.

A single-purpose reading device for a devoted audience, where the screen and the battery matter more than the spec sheet. Through the program to a working EVT.

EVT
06 · HOW WE WORK

We build alongside you.

POSITION

You lead, we enable

We bring the technical, supply-chain and investor perspectives you do not have yet, and we define what is good and what is not with you — direct when something needs to change.

EFFORT

We do not build it for you

We expect real effort alongside us, because the hardware is your moat and it is yours to own. When feasibility or the business hits a real problem, it escalates fast.

RHYTHM

A review at every step

PRD review, tour debrief, build diagnostic, weekly build-plan reviews, prototype reviews, EVT review.

4 BATCHES A YEAR · ROLLING REVIEW

Applications are open.

We reply within one week with a first-call invite or substantive feedback — not silence.

Apply to the Accelerator → How the studio works →