Every unit goes through a 48-hour dry-run cycle before it’s approved for shippng—consistent 0.8Mpa hold and no air leakage across teh pneumatic circuit. COAs are pulled form three separate within a batch to verify peel yield stays above 95% consistently.

Peel rate deviations to 92% or below prompt a full recalibration of air nozzle pressure and the spiral speed, and reche

We can do a single unit for the OP-1 to start. For the larger OP-2 or OP-3 models, we usually ask for at least 2 units per order, but we can be flexible depending on your needs.
Yes, we can supply a material test certificate for the stainless steel 304 upon request. Just let us know when you place the order.
Standard lead time is around 15-20 working days after order confirmation. Shipping time depends on your location, but we'll give you a specific estimate once we know the destination port.
Absolutely. The spiral and air pressure settings can be adjusted to handle varying onion sizes and conditions, so you get consistent peeling with minimal waste.
We pack the machine in a strong plywood case with foam padding inside to protect it during transit. It's suitable for sea or air freight, and we can add extra cushioning if needed.