Quartz crucible is the necessary container for the production of monocrystalline silicon and polycrystalline silicon. It is also the basic equipment for semiconductor industry and silicon solar cell. Our quartz crucibles use Unimin High Purity Quartz Sands, which successfully solve the problem of alkali-free metal spread internally and reduce the impurity density of crucible lining. It also ensures the low content of oxygen and particle defects and makes the crystallization rate improved significantly.
High purity quartz crucible’s outstanding advantages are not available with other materials. The unique properties of quartz crucible include excellent resistance to thermal shock, high deformation temperature and softening temperature and low thermal conductivity.
No scratches, no cracking, no clear pits , clearance and pollution-free on outer and inner surface; glossy and no attachments on internal surface, no bubbles but less little bubbles allowed, no black points but less little black point allowed, no impurity points; no collapse edge on the top of mouth; thickness of wall vacuum transparent coating is≥4mm.
Requirement of purity >99.995％，Aluminum content is <16ppm，Boron content is<0.1ppm.
These advanced quartz products are manufactured at certified facility in Lianyungang, China. Through 30 years of establishment, Dinglong has acquired strong mechanical and technical support and accumulated tremendous experiences for producing fine quartz materials. Our manufacturing processes are optimized for conformity and reliability — helping ensure reliable product quality and value. We believe reliable products can help us obtain leadership sales and build trust and friendship with our customers.