It is an ideal material which stops ultraviolet ray and set out maxi-mum visible light. It serves as the material of quartz halogen lamps, high density discharge lamps and other UV light, which prevent the harm to the skin of the people and the things which has to be under the exposion of UV radiation and set out the maximum vis-ible light at the same time. UV tube is becoming very popular in the market, because of the unique functionaliy.We supply UV1-UV5,with different features.

Item NO.	HST-31
Spec.	UV-1
UV-1 blocking quartz tubling,clear or slight blue,cut surface light blue.The UV1 virtually blocks the UV wavelength between 190-320nm,while still has the high tranmittance in visible wavelength,UV1 is widely used in many kinds of Human-friendly lighting products.

Item NO.	HST-32
Spec.	UV-2
UV-2 High efficiency UV blocking quartz tubing,clear or slight purple,cut surface light purple.The puoduct has all features of UV-1,plus blocking red wavelength of the visible light,The product is good for improving lighting effiency of the light bulbs,are widely used in day-light lamps.

Item NO.	HST-33
Spec.	UV-3
UV-3 Low softenting temperature UV blocking quartz tubing,clear or slight blue or slight purple,cut surface blue or purple,The product has lower manufacturing temperature,and has all visual features of UV-1.The product is used for improving manufacturing efficiency and yield rate of lamp factories.

Item NO.	HST-34
Spec.	UV-4
UV-4 Laser purpose UV blocking quartz tubing,yellow color,cut surface dark yellow.The product blocks all UV wavelength,and is an important material for lasering pumps.The product is used to improve laser light efficency.

Item NO.	HST-35
Spec.	UV-5
UV-5 Ozone free quartz tubing.clear,cut surface slig-ht purple.The product blocks wavelength<220nm,while transmit over 70% in 253.7nm.Good for all kinds of germcidal lamps.