... glass box,PP lid 2. 4-side lock 3.Airtight,heat-resistant,hygienic,durable,space saving 4.Pass QS,PDA,SGS,LFGB ... . Pack: 27PCS/CTNItem description.1.It has 100% sealing performance ,high heat -resistant and extremely durable2.The product applies to microwave oven,dishwasher ... with most powerful production capacity of plastic preseve products in China.3.The products have passed QS,SGS,FDA,LFGB inspection ...