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silica crucible for melting/quartz crucible/fused quartz crucible: 1.Extraordinary Reliability - Thermo Materials' ISO 9000 quality system mandates 100% inspection using assisted visual, ultrasonic and other quality assurance techniques for crucibles 2.Outstanding Thermal Shock Resistance - fused silica maintains the lowest coefficient of thermal expansion of any commercially available material 3.Excellent Refractoriness - reliable performance to extreme temperatures and pressures. 4.Application: Fused silica crucibles are used in the manufacture of poly-crystalline silicon solar cells, an important energy source for the future. We supply all kinds quartz labware,containing:quartz crucible,test tube,quartz beaker,quartz flask,quartz cuvette,quartz boat ,bell jar and so on.