巴布亚新几内亚采购需求：瓷砖，光滑抓地力饰面，大理石设计，防滑瓷砖，大理石效果瓷砖，户外大理石瓷砖

I'm looking to purchase sand for a project and need it in a specific size and quantity. Could you provide me with details on the availability of sand in 30cm x 30cm tiles, covering a total area of 67 square meters? Additionally, I would appreciate information on the pricing, lead time for delivery, and any bulk purchase discounts you might offer. It's important for me to understand the quality and sourcing of the sand as well, so please include any relevant specs. Thank you!