Prestressed Hollow Core importer for prestressed hollow core - Construction and Building

we need to buy prestressed hollow planks and i would like to know companies that produce it Code Description Count Area m2 Unit price, excl VAT Total price, excl VAT Comments Size Weight (t) SF10 200mm prestressed precast planks 152 2048,90 Walkway Platforms width is 1800. Can be done by 2 elements: (1200 + 600) / (900 + 900)* 7460 x 1800 626.79