Cangzhou Qijian Technology Co., Ltd. Is Located In China's Heat-Resistant Glass Production Base And Is a Local Manufacturer And Seller Of High-Quality Glassware.All Of Our Products Are Lead-Free BPA-Free And Environmentally Friendly, Meeting International Quality Standards.Our Company Has Accumulated a Group Of Professional Technical Personnel, r&d Personnel, And Quality Control Personnel After Years Of Hard Work. We Sincerely Serve Every Customer And Look Forward To Long-Term Cooperation With You.About our product:our product is made of heat-resistant borosilicate glass, which can withstand temperatures from -20 ~150. Its lead-free and BPA-free construction makes it a healthier choice for daily use.