news Copper Plating On The Inner Liner Can Enhance The Thermal Insulation Effect Of The Thermos Flask In general, the thermos flask we see is generally made of ceramic or stainless steel and vacuum, which makes the water bottle have a tight 2020年4月15日
info Inner liner of stainless steel thermos flask According to the investigation data of the material of the stainless steel thermos flask, we usually see a wide variety of stainless steel thermos flasks, 2020年4月15日