Product Description: Tungsten is made of hard material that is not easy to deform and wear out. The stainless steel vacuum heat insulation layer structure has a long-lasting insulation effect. The inner surface adopts electrolytic grinding technology to prevent the generation of dirt. The outer shell adopts a fingerprint resistant sealing ring and food grade PP grade materials are used along the mouth, which is healthy and worry free. The anti-corrosion and rust prevention fashion appearance design, combined with practical combinations, leads a new outdoor trend