Hot sell! tempered glass screen protector for iPhone 4/4S, Manufacturer!!!

Hot sell! tempered glass screen protector for iPhone 4/4S, Manufacturer!!! Testing projectMeasuring ToolOperation Method1.Scratching / Crease Visual inspection Face up to items (hold it 20 cm away), it allows slight scratching and creasing but it can not hurts using layer.2.Impurity / SmudginessVisual inspectionit allows 10 pcs impurity of within Ø 0.5mm, but its gap need to above 50mm Not obvious3.Scratching/Fisheye Visual inspectionit allows slight fisheye and scratching like slight rain. And works normal.4.StripeVisual inspectionit allows a slight strip (without a obvious strip in the gap of 100mm)Rainbow stripe Visual inspectionThe rainbow stripe is not obvious in the nature light (in the gap of 20 cm)5.Anti-scratchingB3 pencilScratching to and fro with 20 times, and allow slight mark.6.Transparencytransmitivity test apparatusThe transparency has to be 99% above.7.Material bendingcalipersTest it whether distorted or not after material film molded. It allows the height of arch within 2mm on the base of 80mm width. 8.Stickness Mobile screenHigh speed of emptying air. Hole site and fringe could stick firmly easily. It allows little air left9.Release degreelabelit is good at releasing if it is easy to tear off after material film is shaped10.Size Calipers/ tap the length of the whole material. Tear off other two layer film and measure the thickness of the using layer and the standard is 0.125cm±0.0511.Evenness of pattern by both sides of whole material GlassThe rim mold keeps to stick to glass firmly after 30 mins.Details:Sample
1.Samples can be made according to your requirment,send us your detais with picture or samples
2.Free samples are offered according to your order quantity.
3.Sample fee will be returned to you after order confirm.