Same-colour panels from different shipments of batch production in the warehouse should not be mixed. Each coating batch is unique; mixing panels from different batches on a single building surface would create a feeling of colour reflection difference.
Stockiest distributors should offer small projects of same-colour panels from the same batch they have in stock. Or at least each surface of a small building must use same-colour panels from the same batch.
For larger projects, clients are requested to place all panels required for an identical project within one single order.