about us
Dinglong Quartz Limited is a quartz material manufacturing company headquartered in Jiangsu China. Dinglong has been engaging in researching and producing fine quartz materials since 1987. The product range includes fused silica, fused quartz, quartz powder, quartz tube and quartz crucible. Dinglong’s quartz materials and products are nowadays widely used in refractory, electronics, solar, foundry and other special applications and are distributed within domestic markets and to overseas markets.
PRODUCTS
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Fused Silica
High purity fused silica (99.98% amorphous) Available in both flour and grain forms Versatile mat...
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Fused Silica Flour
High purity fused silica (99.98% amorphous) Low heat expansion properties provide high thermal sh...
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Fused Silica Grain
High purity fused silica (99.98% amorphous) Low thermal expansion coefficient, consistent chemist...
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Quartz Crucible
A Reliable Product Quartz crucible is the necessary container for the production of monocrys...
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Quartz Tube
Lighting We have a wide product range of quartz tubes for lighting applications and can fully mee...
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Silica Powder
High purity quartz powder (99.3% crystalline) High hardness of 7(Mohs) High chemical resistance L...
Fused silica is an extremely insulative material with very low thermal conductivity. With its high thermal shock resistance, it is often used in refractory applications, such as aluminum launders or highly cyclical applications.
In investment casting, fused silica is used for its volume stability. Fused silica has an extremely low thermal expansion coefficient and so very tight tolerance castings can be produced with easy shell removal.
Our fused silica has very high electrical resistivity and low thermal conductivity, so it is often used in the electronics industry as filler in epoxy molding compounds for semi-conductors.
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Refractories
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Foundry
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Electronics
Competitive Advantages