...-proof. The quartz ring has unique optical properties and is a material that transmits ultraviolet light. It can transmit far ultraviolet, visible light and near ...

...you have your own retail stores or online shopping shop? 3. Please advise your target price and possible qty. 4. What is your estimated order quantity after trial order ? Product Description Item Moisture Proof Custom Printed Matt Flat Bottom Pouch Bag for

Customized Recyclable Moisture Proof Paper Valve Bag Building Material Packing Bag Valve bags commonly known as pasted bag, Target material are filled into the bag from its filling spout on the upper or lower bottom. Valve bag requires specialized ...

SiO2 granule 0.5-3mm 1-3mm 2-4mm or customization 99.99% Chemical name: SiO2 Boiling point: 2230℃ Purity: 4N Specification: 1-4mm, particle, target Molecular weight: 60.08 Appearance: white Melting point: 1700℃ Density: 2.2-2.7g/cm3 In 10-4Torr vacuum evaporation temperature is: 1025℃ Transparent area /nm:200-8000 Relative dielectric constant: 3-4 Breakdown voltage /V? Cm-1:106 Thickness:0.03-0.3μm Deposition technology: reactive sputtering