澳大利亚采购需求：防洪闸、自动防洪闸、快速坝式防洪闸、防洪闸门、建筑物防洪闸门、地铁防洪闸门

I'm interested in your automatic flood barrier solution and would like to inquire about customization options. Specifically, I'm looking for a unit that can be adjusted to fit the dimensions of 3 meters in width and 400mm in depth, with a barrier height of 400mm. Additionally, I'm curious if it's possible to modify the surface finish. Ideally, I'd like it fully recessed into paving or concrete, without any fins on the edges, as I would be managing the sealing and structural framing myself. Could you please provide details on the cost for this customized unit? Understanding the pricing will help me assess the feasibility of moving forward with this project. Thank you for your assistance!