伊朗采购需求：圆形结晶器管、方形结晶器管、矩形结晶器管、轧机用轧辊、定制铸造轧辊、锻造轧辊

I'm looking to purchase a specific type of mould tube for my project in Iran. The required dimensions are 100mm by 100mm, with a length of 900mm. Could you provide me with your availability for this item, including your best price per unit and any bulk purchase discounts you may offer? Additionally, please share details regarding your production lead time and shipping options to Iran. It's important for me to understand the quality standards you adhere to, so any certifications or quality assurance processes you have in place would also be helpful. Looking forward to your prompt response!