
Free, unlimited access. Forever.
Engineers, founders, purchasing managers, industrial designers, lab and shop staff. Pre-register once, get screened once, then walk in as often as you like — and never pay us anything.
Because the datasheet
keeps lying to you.
You can read every spec sheet for a tactile switch and still not know which one feels right under a glove. You can compare two gearboxes on paper and not notice that one of them has backlash you can feel by hand. You can specify a connector and find out at DVT that the mating force is wrong for a one-handed service procedure.
Sourcing decisions have a physical component that no amount of PDF will resolve. SFbei exists so that resolving it takes an afternoon instead of three sample orders and eleven days.

Everything. For nothing.
- Unlimited year-round accessNo appointment, no badge fee, no per-visit registration desk. Come every week if it helps.
- Staff who know the floorDescribe the part. We'll walk you to everyone in the building who makes something like it, including the ones you would not have thought to look for.
- Direct supplier introductionsWarm handoffs to a named contact — not a generic sales@ address that answers in nine days.
- The sample libraryLabelled drawers of loose parts you can pull, measure and photograph without asking permission.
- Meeting rooms and call boothsBookable rooms for a supplier conversation, and booths for the 4pm call that is 7am in Shenzhen.
- Every event we runMixers, teardowns, category nights and country delegations on the roof deck. Free for registered builders.
About the pre-screening
We verify that you are building something — a company, a lab, a product, a serious project. That is the whole bar. It keeps the floor useful for suppliers, which is what makes them willing to put real inventory on the shelf.
What we don't do
We don't sell your details, we don't hand your contact information to every supplier in the building, and we don't charge you anything, ever. Introductions happen when you ask for them.

How to get the most out of an afternoon.
Search the directory first
Filter by category so you arrive knowing which two or three aisles you actually need.
Bring the part
The bracket, the failed connector, the old motor. Half of what happens on the floor starts with somebody putting an object on a bench.
Ask for introductions
Tell reception which listings interest you. Named contacts, time zones and languages are on file.
Leave with specs, not stock
Catalogs, cards, sometimes a sample — and a live conversation with the person who makes it.
If you specify parts, this floor is for you.
Hardware startups
Pre-seed to Series C teams building their first hundred units, and the ones who just discovered a 26-week lead time.
Robotics & automation
Arm builders, integrators and AMR teams sourcing drivetrain, sensing and end effectors.
AI infrastructure
Rack, edge-box and appliance teams sourcing power delivery, thermal and interconnect.
Medical & lab
Device teams who need documented supply chains and ISO 13485 partners, not a marketplace listing.
Contract manufacturers
EMS and box-build shops sourcing on behalf of their own customers.
Makerspaces & labs
University labs, research groups and shop staff specifying equipment and consumables.
One form.
One screening.
Then walk in.
Registered builders get access from opening day, ahead of the public launch, plus invitations to the mixers and teardowns on the roof deck.
Tell us what you're sourcing and we will flag the suppliers in your categories the moment they confirm — several people have already found what they need before we opened.

Builder pre-registration
Free. One screening, then unlimited access.
What visitors ask us.
Is it really free?
What does the screening involve?
Can I bring my team?
Can I buy parts there?
Will I get spammed by suppliers?
I'm not in the Bay Area. Is it worth a trip?

Register once.
Walk in whenever.
Pre-registration is open now. Registered builders get access from opening day and an invitation to everything we run.