加拿大采购需求：特色木材种类、屋顶瓦片、西部红雪松

I'm looking to purchase approximately 250 units of cedar shingles for an upcoming project. It's important that the shingles meet specific quality standards since they will be used in a residential setting. I would appreciate if you could provide details on the available options, including sizes, grades, and any treatment processes you might offer. Additionally, please include your pricing information, lead times for delivery, and any minimum order requirements. If you have any samples or catalogs showcasing your products, that would be great too. Looking forward to your prompt response so we can move ahead with this order soon.