新加坡采购需求：沼气发电机，液化天然气发电机，燃气发电机组，燃气发电机组，发电机组，柴油发电机组

I'm interested in exploring your OEM and ODM services and would like to get detailed cost information. Specifically, I'm looking for pricing based on minimum order quantities, customization options, and any additional fees for tooling or special materials. Additionally, could you provide insights on lead times for both prototypes and full production runs? Understanding your payment terms and any discounts for larger orders would also be appreciated. Looking forward to your detailed response!