Duplex Board Gray Back Wholesale Quotes

I need firm quotations for Duplex Paper Board, gray back, with a basis weight of 300 GSM. My ideal sheet size is 90 × 120 cm, but I will consider any stocked dimensions you already convert; no need for a special run if a close size is readily available.

Quantities: I am forecasting repeat orders that can start as low as 300 kg and scale up to 10 tons per order. Please quote tiered pricing that reflects current German market levels and is sourced directly from mills or wholesale channels inside Germany.

Quality: I can work with any good grade—from economy to premium—provided the sheet performs reliably for both packaging and printing applications. If your material holds ISO or FSC certification, feel free to mention it, though it is not a strict requirement.

To keep evaluations straightforward, include:
• Ex-works or delivered-to-door price per tonne (specify Incoterm) for 300 kg, 1 t, 5 t, and 10 t breaks
• Available sheet sizes and minimum order per size
• Production or warehouse lead time and current stock status
• Payment terms and sample policy in EUR
• Technical sheet (caliper, brightness, rigidity, gray back shade)

I aim to choose a supplier quickly, so clear, complete information will help accelerate a purchase decision.