This document is a sample approval sheet from Lexvss Group for a screen protector. It lists the customer and product details, date of sample delivery, and spaces for confirmation signatures from both Lexvss and the client. The document also specifies the product and performance test standards for the screen protector, including tests for drop impact resistance, surface hardness, fingerprint resistance, and high/low temperature storage. Finally, the document provides inspection standards for the tempered glass screen protector's appearance, outlining allowable defects for attributes like spacing, lines, spots, dark spots, edges, warping, and ink printing. Samples of the screen protector are to be attached.

1. Lexvss Group (Hong Kong) Co., Ltd
Screen Protector Sample Approve Sheet
Customer Name:
Product Model:
Application to:
Date of sample delivery:
Confirmation by Lexvss
Check man Engineer Purchaser Signature
Confirmation by Client
Check man Engineer QC signature
Result：□qualified □unqualified □other
If your company objectionable with this sample approve sheet after receive
the sample, please marked within 2 days; if no objection, please signature
and stamp then fax back. Thanks.
Company Name: Lexvss Group(Hongkong)Co., Ltd.
Address: No.1009, Xingji building, Xinsha road,Shajing, Baoan district, Shenzhen
Tel: +86-755-83838518
E-mail : henry@lexvss.com

2. 一、Product Specification（Glass screen protector）：
（Note: Material thickness tolerance +/-10% when no special requirement）
Name Brand Specification
Dimension（mm）
Result
OK/NG
Glass NSG 0.33mm 2.5D
AB glue Toyo 0.1mm
AF layer vacuum plating 1 piece/ bag
二、The performance test specification
Test project Test method and standard Result
OK/NG
DROP BALL
TEST
Test environment： Steel ball drop tester
Test objective： Test the product impact resistance performance
Test method ： 32kg steel ball free drop three times at height of
30cm（Random three points of screen protector）
Test standard： The product is not crush.
Hardness of
surface
Test condition: Pencil Hardness tester
Test objective: Test the hardness of surface
Test method: Use 7H pencil【MITSUBISHI】，pencil lead sharpening to
cylindrical and worm down on the sand paper ， install it on the pencil
hardness tester(Pencil and horizontal plane angle of 45 °) ,load 765g,
push pencils sliding forward not less than 7 mm, Then use the eraser
wipe marks clean, check whether there is any scratch on product surface.
Test standard: Product surface without scratches
Fingerprint
proof effect
Test condition: Water Angle tester、rubbing machine
Test objective: Test the fingerprint proof effect of glass surface
Test method: The initial water Angle ≥112±2°
Test standard: Use No.0 steel wool(superficial area 10*10MM),1000 g
friction force, after 3000 times friction ,water angle ≥90°
High/low
temperature
storage
Test condition： 80℃ /-40℃
Test objective： High/low temperature storage performance test
Test method ： After placed in temperature 80℃/-40℃ 240
hours，placed in indoor temperature 24 hours, Check the performance
and appearance of the product.
Test standard ： Sample performance and appearance conform to the
finished product inspection standards.

3. 三、Tempered glass screen protector appearance
inspection standard
Test
project
Test standards Test method Result
OK/NG
Defect
spacing
and total
number
1. Distance between the defects need greater than20mm（Including
the
ignore defect）
2. spot defect and line defect total number less than 5 pieces
Visual detection
line defect
(scratch,
Abrasion,
fuzziness,)
1.W≤0.02mm，ignore if distance more than 10mm
2. 0.02mm＜W≤0.08mm And L≤8mm，allow 2 lines
3. 0.05mm＜W≤0.08mm And L≤8mm，allow 1 line
3.Over the range as above，disallow
Visual detection/
Firinca
spot defect
(white dot,
foreign
matter,
Dirty, pit,)
1. D≤0.15mm, ignore
2. 0.15mm<D≤0.20mm，allow 2 pieces，distance more than 20mm
4. Over the range as above，disallow
Visual detection/
Firinca
dark spot 1. D≤0.25mm,allow 1 piece，AA area D≤0.2mm allow 1 piece Visual detection/
Firinca
smudge 1. disallow uncleanness
2. refer to limit sample in necessity
Visual detection
Edge
Collapse,
Angle
Collapse
1, D≤0.2mm，do not cause light leak, allow 2 area, distance more than
15nm
2. Extensibility crack, disallow
Visual detection
warping
degree
H≤0.30mm plug guage
ink
printing（sk
ew、light
leak）
outer edges light leak W≤0.10m；ignore
outer edges light leak 0.10mm＜W≤0.15mm allow 1 point
inner edges light leak W≤0.10m；ignore
inner edges light leak 0.10mm＜W≤0.15mm allow 1 point
Visual detection
Ink off、crack、
bubble、salie
nt point
not allowed Visual detection
gloss oil White dot, pit Not allowed Visual detection

4. 四、Attach screen protector sample here