The whole world is buying Chinese solar. That's exactly when the corners get cut — and you can't see a hidden microcrack or a swapped backsheet from behind a screen.

The Solar Panel Factory Audit App is the on-the-floor checklist a sourcing operator uses to audit a China solar-module factory before you pay: cell-maker vs module-assembler, EL imaging for hidden microcracks, flash-test power binning and the positive-tolerance check, PID and wet-leakage, IEC 61215:2021 / 61730:2023 and UL 61730 verified with the issuing body, the material-origin traceability file, and the bank-account check. Run it on your iPhone or iPad — offline — score the factory 0–100 with a Proceed / Caution / Walk verdict, and send the report to your boss. One-time $67.

Solar is the hottest trade on earth right now, and when an industry runs this hot, new "factories" appear every week — some real makers, some just laminators buying cells and printing a label, some real but not ready. In 2025 a record 83% of module makers failed at least one independent reliability test, and 59% of the exact bills-of-materials tested failed — because the gold sample they certify is not what ships. A skipped EL scan, a thinner backsheet, an EVA film where the datasheet said POE, a cloned EL image: none of it is visible from behind a screen. And you're about to wire five or six figures against a 25-year promise.

I audit these factories on the ground. I spend the day on the floor — EL station to laminator to the flash tester — for buyers who can't be there. So I put the exact checklist I actually carry into an app. Not a generic form a software company guessed at from an office. The modules I pull myself, the raw EL frames I demand, the certificate editions I read line by line, the traceability file I make them walk backwards, the bank name I check — the discipline that separates a real module maker from a repackager.

• •46 weighted checks across 14 blocks — every question I ask on the floor, scored by how much each one actually matters, so you never miss the one that sinks the order
• •A live 0–100 factory score with a plain-English verdict — Proceed, Caution, or Walk Away — that updates as you tap, so you know where you stand before you leave the building
• •The measurement layer — type your flash-test power (0/+5 W tolerance), EL findings, insulation/wet-leakage and glass-thickness readings straight into the app, and they land in the report as proof
• •The EL & flash fraud checks — pull modules you pick yourself and demand the raw IV curve + raw EL frame per serial, so a cloned image or a fake flash list can't get past you
• •The 2026 edge — TOPCon Year-1 UVID, encapsulant UV cut-off, POE-vs-EVA front and rear, cert editions (61215:2021 / 61730:2023), and live cert-database verification
• •Bilingual 中文 “show-the-manager” cards on all 46 items, with pinyin — hold up your phone, the manager reads the exact question in Chinese, no translator and no misunderstanding
• •The excuse layer — on each check, one line on what a factory says to dodge it and what an honest answer actually sounds like, so a smooth “no problem” never fools you
• •Evidence shot-lists + one-tap photo capture — the exact photo to take on each item, saved into the report, so your boss sees precisely what you saw
• •One-tap “Send report” to your boss — iMessage, WhatsApp, or email — score, verdict, notes and photos, sent before you walk out the gate
• •Save-as-PDF — a clean, professional report you can attach to a PO, a lender packet, or your own files
• •Runs 100% offline — add it to your Home Screen and it works with zero signal inside the plant, and your numbers never leave your phone
• •Audits YOUR order's priorities first, has ⚡ 30-minute mode for short visits, and pre-visit WeChat questions to ask before you ever book the trip
• •Optional presence stamp — date, time and GPS location on the report, so there's proof you physically stood in the building
• •A “what remote checking cannot see” list — the app flags what only an in-person visit can catch, so you know exactly where your blind spots are
• •Field-hardened from real audits for demanding Western buyers — see YOUR exact model on the line, inspect aged / returned modules for delamination and corrosion, measure panel thickness and frame, pin honest capacity + a dated schedule, and get the specs in writing
• •One-time $67. No subscription. Own it and run it on every solar supplier you visit, for years

Want my eyes on it? The Solar Desk Review.

The app gives you the score and the evidence. Sometimes you want a human read on top of it — from someone who's seen a thousand of these. So run the audit, generate your report, and send it to me.

I give you my written assessment — the judgment and the tells I don't put in any app, on your exact supplier — within 2 business days. No call, just the read. That's the Solar Desk Review, $97, and it lives one tap away inside the app.

• ▸My written go / no-go on your scored report
• ▸The tells that only come from being on the floor for 25 years
• ▸Delivered in 2 business days — no call to schedule

Importers, EPCs, developers, procurement leads, and sourcing agents buying solar modules from China — whether you're flying to the factory yourself or you're already on the ground and want the operator's checklist in your pocket.

"I'll just make my own checklist." You can — and most people do, badly, leaving out the exact lines that cost them: the raw EL frame that reveals the microcracks, the certificate edition that's already been superseded, the POE-vs-EVA film swap, the traceability file that decides whether your container clears customs, the bank-name check that stops the most common fraud in this trade. This is the one I actually carry onto the floor, already built and structured the way an operator prices risk, for less than a rounding error on your order.

Built by Cengiz Gündüz — 25 years in cross-border trade, on the ground in Shanghai, inside these factories every single week. He sells industrial goods out of China himself, so there is no supplier to push and no kickback. This is the checklist he runs on his own money, handed to you.

One bad solar order — a pallet of modules with hidden microcracks, a backsheet that cracks in year three, a container held at the border for a missing traceability file, a wire to the wrong account — costs you five or six figures and a 25-year headache. This is $67, one time, and you run it on every supplier you ever visit. Cheap insurance on an expensive mistake.

The "Don't Get Burned" Guarantee

Use it on your next order. If it doesn't save you a headache — or a dollar — email me within 7 days and I'll refund you in full. No forms, no hoops. I'm one operator in Shanghai, and I answer every email myself. — Cengiz