Solar inverter
String or central PV inverters, 3 kW-3 MW, with grid-code compliance for the target market. Efficiency curve, MPPT range and the actual grid-connection certificate are checked before shipment.
InquireSolar & Renewables
The Solar & Renewables we reverse-engineer, verify, and negotiate on your behalf. Pick a model or send us the spec.
PV module
Monocrystalline modules from 400 W to 700 W, framed or bifacial. Flash-test data read against the nameplate, electroluminescence imaging, the degradation curve and the certificates that actually cover the shipped batch are verified before the container is sealed.
InquirePV combiner box
String combiner boxes with 4 to 24 inputs, DC breakers, fuses and surge protection rated for 1000 V or 1500 V systems. Enclosure IP class, busbar current rating and the DC ratings of every device inside are checked.
InquirePV mounting structure
Ground-mount, roof-mount and carport structures in hot-dip galvanised steel or anodised aluminium. Design wind and snow loads, the structural calculation behind them and the fastener corrosion grade for a coastal site are verified against the drawing set.
InquireSolar splits into goods and devices — verify them differently
Solar does not verify like the rest of this site. Modules and mounting are closer to goods: the verdict rests on batch traceability and inspection on arrival rather than on parameter equivalence. On modules, read nameplate power against measured flash-test power (positive or negative tolerance), the defect grade from electroluminescence imaging, PID and hot-spot test records, and whether the certificate covers the design series or the actual batch. On structures, it is the structural calculation behind the design wind and snow loads, the steel grade, and the coating or anodising thickness.
Inverters and combiner boxes come back to device logic: grid-code compliance for the target market (a real certificate, not a self-declaration of "complies with"), efficiency curve and MPPT range, the DC voltage window matched to the string configuration, and the completeness of protection functions — insulation monitoring, DC arc-fault detection, anti-islanding. The grid-connection certificate is the weakest link in this category: a certificate whose model designation does not exactly match the nameplate is common, and disqualifying.
Three boundaries deserve agreeing up front: how transport damage is apportioned and to what packing standard, who actually stands behind the warranty (the works directly, or a layer in between), and the spares and service response behind it.
The method is the site standard: a free 48-hour initial screen returns go / hold / walk; Spec Match aligns grid-code requirements, string configuration and the model shortlist; Remote Audit reads production lines, ageing tests and power-binning records at the works. You pay us and no commission flows from any factory, stated in writing.
Solar: with nine-tenths of capacity, availability is not the question
This is the one class in our list where China holds an overwhelming share of global manufacturing. The procurement question therefore moves entirely onto batches and certificates.
01
Capacity share, stage by stage
At the end of 2025 China held approximately 96% of global polysilicon capacity, 96.2% of wafer capacity, 91.3% of cell capacity and 80.1% of module capacity. Eleven of the world's top twelve module suppliers are Chinese.
02
The technology generation has already turned over
N-type cells now exceed nine-tenths of the domestic market, with TOPCon at roughly 87%. Where technology iteration is this dense, certificates and nameplates are also most likely to drift apart.
03
So the logic of verification changes
Modules and mounting behave more like goods: the verdict rests on batch traceability and arrival inspection — nameplate power against measured flash-test power, EL defect grade, PID and hot-spot records. Inverters and combiner boxes return to device logic: grid-code conformity, efficiency curve and MPPT range, DC arc-fault detection and insulation monitoring.
04
The weakest link in the category
A grid-connection certificate whose model designation does not exactly match the nameplate is common, and disqualifying. Three boundaries also deserve agreeing up front: how transport damage is apportioned, who actually stands behind the warranty, and the spares and service response behind it.
Send the batch, the model and the destination market
The module batch and flash-test tolerance, or the inverter model and the grid code you must satisfy, is enough to start. One verdict on the supplier within 48 hours, one core reason, and the certificate-scope and traceability questions attached.
Equipment sourcing FAQ
How do you tell a real factory from a trading office?
We cross-check the business-licence scope, social-insurance headcount, and customs filing. A "manufacturer" with two insured staff and no production-equipment records is almost always a trader reselling someone else's unit. We also look at whether the address is an industrial park or a serviced office.
Can you match a specific brand or model to the right manufacturer?
Yes. Send us the brand and model, or just a nameplate photo, and we reverse-engineer the key parameters: rated voltage, impedance, cooling class, protection grade. Then we shortlist Chinese manufacturers whose product line genuinely covers those parameters. This is the Spec Match tier.
Can you negotiate on my behalf?
Yes. The Procurement Execution and Remote Audit tiers include independent negotiation support, and On-Site Verification covers the physical checks; either way, we sit on your side of the table, not the factory's.
Do you take commissions from factories?
Never. We're paid only by you, on a flat fee. When we name an alternative supplier, we state in writing that we have no financial relationship with it. No referral fees, no kickbacks, no revenue share. Our only incentive is that your deal closes.