... ., LtdBusiness Type:Manufacturer Product/Service:Fused quartz tube, Electro-fusion quartz tube, Ozone-free quartz tube, Closed quartz tube, Quartz Rod, Quartz Lens, Boiler quartz tube , Melted quartz powder, Crystal Soup caldron,Crystal ... polishing, bending and pinching and etc. can be done according to the requirement of customers. OH-content can be controled within ...