304 stainless steel vacuum insulated lunch box lunch box student round office worker 1 person super long heat preservat

现货 304不鏽鋼真空保溫便當盒便當盒學生圓形上班族1人超長保溫可攜式多層 304 stainless steel vacuum insulated lunch box lunch box student round office worker 1 person super long heat preservation portable multi-layer 304 keluli tahan karat penebat vakum kotak makan siang kotak makan siang pelajar pekerja pejabat bulat 1 orang penebat panjang pelbagai lapisan mudah alih