也门采购需求：聚乙烯、低密度聚乙烯、高密度聚乙烯板材、高密度聚乙烯塑料、聚乙烯塑料、低密度聚乙烯塑料

I'm looking to import 300 tons of polypropylene and polyethylene plastic granules for an upcoming project. It's crucial that the materials meet industry standards for quality and consistency, as they'll be used in various applications. Please let me know your available grades, specifications, and any certification details that can assure product reliability. Additionally, I would appreciate it if you could provide pricing information, lead times for delivery, and minimum order quantities. If there are options for custom blends or specific requirements, I'd love to explore those as well. Looking forward to your prompt response so we can discuss this potential order further.