新加坡采购需求：壁挂式热水器、壁挂式饮水机、壁挂式饮水器、壁挂式、饮水机

I'm looking for a detailed price list for your wall-mounted water dispensers. Please include different models and their specifications, along with any bulk order discounts or special offers you might have. Additionally, could you provide information on the materials used, energy efficiency ratings, and warranty options? This will help me evaluate the best options for our needs. Looking forward to your prompt response!