... electrolysis 3,longtime insulation 4,food&soup available our food jar:stainless steel food jar,soup box: basic details: *capacity:450ml *packing: ... ,FDA test , SGS , 100% BPA free,LEAD free;· Unbreakable stainless steel material & 100%leak-proof ;· No leak & easy open twist ... carry,.· It was made of high quality food grade stainless steel and no joint less structure.· Anti-corrosion Special coating ...