A crystalline-silicon module production line running across a factory floor, seen down the length of its stations
One line · six stations, cell in to module out
Cell in Module out 1Scribe 2String 3Lay up 4Bus 5Test 6Mark These three can fold into a single machine
The shared six-station sequence Where the machine count can shrink

The whole line

One Line, Six Stations — and How Few Machines It Really Takes

The line is one chain of six stations — cell in at one end, a marked module out the other. Before you pick a single machine, see the whole run at once: what each station does, and where three of them can fold into one. Read the chain, then drop into any station.

The six stations

Scribe, string, lay up, bus, EL / IV test, mark — the same order on every line, whichever cell route you run.

Where it can shrink

The first three stations are not always three machines — one machine can carry scribing and stringing, another all three. The count is a decision.

What this page is for

What This Page Answers, and the Numbers It Won't Print

This page answers the line-level questions and refuses the line-level numbers. That refusal is deliberate — so read what is here, and read what is pointedly not.

If what you need is a whole-line capacity number, that is the first thing the agreement settles — send the route and the rate the line must hold →

Station by station

What Each of the Six Stations Does

Start with the plain reading of the chain: one line per station, what it does to the cell or string passing through. No numbers here — those are on the machine pages — just the job each station holds on the line.

in out 1Scribe 2String 3Lay up 4Bus 5Test 6Mark
  • Scribe

    Separates each whole cell into halves or thirds by laser, so the cells string at the pitch the module design needs.

  • String

    Solders the divided cells into strings, cell to cell, at the pitch and busbar count the module calls for.

  • Lay up

    A robot places the finished strings onto the module layout, squaring and spacing them for the glass.

  • Bus

    Joins the laid strings with cross-connectors into one circuit across the whole module.

  • EL / IV test

    Reads the module for hidden cracks and for its electrical curve before it leaves the line.

  • Mark

    Writes the module's identity onto the frame so every unit is traceable off the line.

Read top to bottom, that is the whole line in six lines. Each station links to the machine that runs it — the spec sheet is one click away, and it is not repeated here.

The seams

What Each Station Hands the Next

Here is the thing a single-machine page can never show: a line is only as good as its hand-offs. Each station takes a specific thing from the one before and passes a specific thing on — and it is at those seams, not inside the machines, that a line flows or jams.

1Scribe 2String 3Lay up 4Bus 5Test 6Mark divided cells cell strings squared layout joined circuit tested module
  • Cell → Scribe

    Whole cells arrive from your cell plant; the scriber takes them as they come and returns divided cells, sized to the string.

  • Scribe → String

    Divided cells pass to the stringer, which needs them cut clean and consistent, and hands on finished cell strings.

  • String → Lay up

    Strings pass to the layup robot at a matched height and pitch; it returns a squared module layout ready for connection.

  • Lay up → Bus

    The laid-out module passes to bussing, which ties the strings into one circuit and hands on a complete electrical module.

  • Bus / Test → Mark

    Once tested, the module reaches marking, which writes its identity and releases it from the line.

The seams are why layout height and string pitch matter as much as any single rate: a stringer that will not meet the layup robot's feed height is two good machines that do not make a line. Matching the seams is the work this page frames and the agreement pins down.

A machine page tells you what a station does. Only the line tells you how few machines it takes.

The merge decision

How Many Machines Does This Line Take? Fewer Than Six

Now the question this whole page exists to answer, and no machine page can: how many machines are in your line? The instinct — one per station, six across the front-to-test run — is wrong, and getting it wrong sizes your floor and budget against a machine count you never need.

Where it goes wrong

Plan one machine per station and you size the floor, the material flow and the crew for six discrete front stations — then discover the first three can be one machine. Now the layout, the buffers and the number of agreements you signed are all built around a line that was never the only option.

The merge decision comes before the machine choice. It is a line-architecture call, not a spec comparison — which is exactly why it belongs on this page and on no machine's page. Three registered ways the front of the line collapses:

  • SML-I150 — scribing and stringing, one machine

    The integrated machine that carries the scribing and the stringing stations together — two stations, one machine, one footprint.

  • SML-I150L — scribing, stringing and layup, one machine

    Takes it further: scribing, stringing and layup as three processes in a single integrated machine — the front half of the line in one crate.

  • SML-L150 — layup and bussing, integrated

    A module layup-and-bussing integrated machine; its name states the combination it carries, and that combination sits one station further down the line than the two above.

One machine per station Scribe String Lay up Bus Test Mark 6 machines Front three folded into one Scribe + String + Lay up Bus Test Mark one SML-I150L 4 machines Both drawn to one scale · neither is the better line — the lower row is simply fewer machines.

So the front of your line is a choice between as many as three discrete machines or as few as one, and that choice ripples through floor area, material handling and how many acceptance agreements you hold. We do not decide it for you — but it is the decision to make first, and the reason a line is scoped before a machine is quoted.

The bench behind the line

What the Six Stations Are Built From

Behind the six stations is a bench of machines the line draws from. Three numbers place its scale, so the machine lists below read in proportion.

6
Stations from cell-in to marked-module-out — the full slice this line covers
24
Machine models the six stations draw from, across every route and rate
1 GW
The BC module-line blueprint this whole bench is drawn around

Of those 24 models, six are detailed in full on this page — every parameter on its own machine page — and the rest are specified to your line-order rather than to a web page. The next two sections take each group in turn.

Detailed in full

The Six Machines Detailed in Full

These six carry the line's core stations and are documented in full — each has its own page with every parameter. Here they get one line of placement and a link; the specs stay where they belong, one click away.

The SML-S60 BC high-speed stringer

SML-S60 — the BC stringer

The high-speed stringer for the BC route. Open its page for the full parameter table.

SML-S60 page
The SML-S40 multi-busbar stringer

SML-S40 — the multi-busbar stringer

The TOPCon / PERC stringer built for higher busbar counts.

SML-S40 page
The SML-S15 entry stringer

SML-S15 — the entry stringer

The entry-level stringer for TOPCon / PERC lines starting smaller.

SML-S15 page
The SML-C72 high-speed laser scriber

SML-C72 — the laser scriber

The high-speed lossless laser scriber that both routes share.

SML-C72 page
The SML-C20 compact entry laser scriber

SML-C20 — the entry scriber

The compact entry laser scriber for smaller lines.

SML-C20 page
The SML-A6 robotic layup machine

SML-A6 — the robotic layup

The robot that places finished strings onto the module layout.

SML-A6 page

Read this page for where a machine sits on the line; open the machine's page for what it does and to what tolerance.

Name and photo, no numbers

Why the Other Machines Show a Name and a Photo

The machines in the gallery below appear with a name and a photo, and no parameters. That is a rule, not an omission. The six machines above carry every figure straight from the technical agreement you will sign; the rest carry a photo now and an agreement written to your line when you order.

So when you want a parameter for any machine in the gallery, the path is the same as for the whole line: send the line requirement, we write the agreement, and the numbers go into the agreement — not onto a web page. A figure that isn't signed into your line isn't a figure we publish.

The two seams

Where Our Line Stops and Yours Begins

A line has two seams with the rest of your factory, and being clear about both is how a line integrates without surprises. Our six stations sit between them.

  • The upstream seam

    Cells arrive already made. We take them at scribing — we do not make wafers or cells, so ingot, slicing, texturing, diffusion, PECVD and printing sit on your side of it.

  • The downstream seam

    A tested, marked module leaves the line. Lamination and everything after — laminator, framing, cleaning, junction-box and installation — sit on your side of it.

Naming both seams plainly is the point: you know exactly what feeds our line and exactly what receives its output, so the integration into your factory has no grey zone in the middle. What crosses each seam is a cell in and a marked module out — nothing more, nothing hidden.

One building, one merge

Whether the Building Changes This Decision

One thing the merge decision above quietly moves is the building it lands in — a line of three front machines and a line of one do not ask the same thing of your floor.

The site requirement is not one whole-line figure; it is read machine by machine, and the merge you choose changes which machines are on the floor to read. That per-machine reading is the utilities and layout page's subject, not repeated per line here.

See line utilities and layout, read machine by machine

More than one format?

Whether a Format Change Reaches This Decision

If you expect to run more than one cell format, that touches this page's decision at one point only: a line's compatibility is not set line-wide — it is set by its tightest single station.

Which station is the tightest depends on which machines your merge choice puts on the line, so the two decisions are linked — but the rule itself, the tightest station and where a change's cost sits, is the compatibility and changeover page's subject.

See cell compatibility and changeover for which station sets the range

One agreement per machine

How Many Agreements You Sign

The merge decision has one more consequence worth naming here: there is no single whole-line contract.

Every machine is signed for on its own, so the count of agreements you hold equals the count of machines on your line — and the merge that turns three front machines into one turns three front agreements into one too. What each agreement then covers, from the day you sign to the years after, is one page for the whole line.

See after you sign for what each agreement covers

Line shape still open?

Send the Line, Get It Mapped

If the line shape is still open, the fastest way to close it is not more reading — it is to send the three things that decide it and get the chain marked for your case.

1

Send the route and the cell

The cell route and format place you on the chain and set which stations change.

2

Tell us the rate and the floor

The throughput the line must hold and the space it lands in — the two inputs to the merge decision.

3

We map the chain

A marked chain for your line — which stations merge, which machines carry them — back within 24 hours.

Reply within 24 hours
Depth view down a running crystalline-silicon module production line across its stations

Get the line mapped

Get Your Line Mapped, Station by Station

One line-order in, one marked chain back — the six stations for your case, where they can merge, and the machine page for each. The low-commitment way to settle a line's shape before you quote a single machine.

We map the line within 24 hours · reply by email.