葡萄牙采购需求：徐工零件、山推零件、山东临工

I'm reaching out to inquire about your available options for oil filters and air filters. I'm particularly interested in learning about the different models you offer, including their specifications and pricing. We are looking for reliable products, so any information on your quality standards and certifications would also be appreciated. Additionally, it would be helpful to know your minimum order quantities and lead times for production and delivery. If you have any promotional deals or bulk purchase discounts available, please share those details as well. Looking forward to your prompt response so we can potentially initiate a successful collaboration.