... ,hand craft; 2.Boro 3.3 glass; 3.ISO9001:2000; 4.Welcome OEM orders. High Quality Concial Flasks1.Materilal: Borosilicate glass 3.3 glass.2.Description: Approximate ... industry, petrochemical industry, electronic chemistry, biochemical pharmaceuticals, laboratory and education.3.Service: We offer OEM service, customized design, logo/brand and ...