1. What are the main products we are producing? Kinds of heaters and coolers. 2. What's JEMELL's main advantages? We can provide customer products with competitive price, better quality, better service. 3. What else that JEMELL can do? We can design/develop/manufacture customized products. 4. Is logo can be printed? Yes, silkscreen print, gift box, manuals, labels, carton, all can be customized. 5. What if I need a sample? Sample can be provided within one week. 6.What's JEMELL's service? One year warranty, 1-2% spare parts, OEM&ODM can be provided.