日本采购需求：门窗，门窗，铝合金窗，铝合金门，室内门，阳光房，铝合金推拉窗

I'm reaching out to explore the OEM/ODM pricing structure for larger order quantities. Since we're considering placing a significant order, it's essential for us to understand the pricing tiers and any potential discounts available for bulk purchases. Knowing the specifics about minimum order quantities and the pricing breakdown will greatly aid our decision-making process. Additionally, it would be helpful to get insights into lead times, payment terms, and any flexibility in terms of customization options. The more details you can provide regarding your pricing model and any added value services, the better we can assess our options. Looking forward to your detailed response!