1. Shinkwang chemicals co., ltd 2015.06 Bonding and Sealing Solutions for micro speakers

2. Protector Ring Membrane Voice Coil Membrane Part Wire Part Magnet PartFrame Part 主推產品 Membrane ji Wire Part Application Viscosity cps at 25 ℃ HardnessCure methodCure Condition G01-1001Membrane + Voice coil3,500 ~ 5,500SHORE A TYPE 96UV cure365~410nm, Min. 2,000mJ/cm2 G01-1007Membrane + Voice coil8,000 ~ 11,000SHORE A TYPE 83UV cure365~410nm, Min. 2,500mJ/cm2 G01-1009/1009SMembrane + Voice coil11,000 ~ 16,000SHORE A TYPE 90/60UV cure365~410nm, Min. 2,500mJ/cm2 G01-2009 ／ 2009S ／ 2009-05 Membrane + Voice coil10,000 ~ 15,000SHORE A TYPE 92/56UV cure365~410nm, Min. 2,500mJ/cm2 GUV-6009BJWire Fixation2,000 ~ 4,000SHORE A TYPE 97UV cure365~410nm, Min. 3,000mJ/cm2 SKA-910-76Magnet Part20,000±3000SHORE D TYPE 82Thermal Cure Dry oven 80 ℃ 3~5 min Hot Plate 80 ℃ 55 sec SKEF-1222NFrame Part8,000 ~ 10,000liquid type, one-component non-solvent adhesives Applications Properties of ShinKwang Chemicals

3. (membrane) Membrane + Voice coil ★ G01-1009, G01-1009S ★ G01-2009, G01-2009S Wire Fixation ★ GUV-1010S Fast cure Easy application Sealing, adhering and fixing purpose of electrical parts. Magnet + Magnet Fillet ★ SKA – 910 – 76 Micro speaker Unit Applications Properties of ShinKwang Chemicals

4. ★ G01-1009 ★ G01-2009 Membrane Part Membrane + Voice coil G01-1009/1009SG01-2009/2009S Cure methodUV cure Main componenet URETHANE ACRYLATE URETHANE ACRYLATE ColorPINK Specific gravity1.02~1.08 Viscosity, cps at 25 ℃ 11,000 ~ 16,00010,000~15,000 Refractive index1.49 ± 0.005 Cure Condition 365~410nm, Min. 2,500mJ/cm 2 365~410nm, Min. 2,500mJ/cm 2 HardnessSHORE A TYPE 90/60SHORE A TYPE 92/56 Thermal resistance 120 ℃ 150 ℃ Environment-related content RoHs, Halogen, Antimony, phthalates free RoHs, Halogen, Antimony, phthalates free Storage condition Room Temp. (15~30 ℃ )) Room Temp. (15~30 ℃ ) Non volatile matter Min. 99% Guarantee Period 9 months from production date 9 months from production date Good adhesion to various metal and plastic substrates Remain physical properties after high temperature storage. Remain adhesion strength to substrate after high temperature load Materials:insulating course+PEI/PET/PEN/PI/PAR

5. Magnet Part Magnet + Magnet Fillet Materials: material plating galvanizedmaterial MAGNET FILLET MAGNET POLE PIECE SKA–910–76 Appearance (liquid) Black (Custom option) Curing method Heat-curable type Components One component epoxy Cure rate Low- temp. and fast curable type Application Adhesive for a metal, ceramic, FR-4 Viscosity (CPS) @25 ℃ 20,000±3000 Brookfield–HBDV3T CP Rheometer spindle CP-51, @3 rpm Thixotropic Index 5 ± 0.5 Brookfield-HBDV3T CP Rheometer Glass transition temperature 59.8 ℃ DSC 2nd scan (10 ℃ /min) 200 ℃ Specific gravity @25 ℃ 1.5 Moisture Absorption (%) 0.93 (85 ℃ /85%, 1hr) Thermal curing condition Type Hot plate Curing Temp. (120 ℃ ) 35 min. Curing Temp. (100 ℃ ) 45 min. Curing Temp. (80 ℃ ) 60 min. Volume Cure Shrinkage (%) 1.1 HardnessShore D 82 Shelf life / pot life within 6 Months at -20 ℃ within 3 Days at 25 ℃

6. Benefits - 100% Non Volatile - Excellent Start Tack - One component - High strength adhesion - Possible to Automation - Use a variety of Plastic Bonds - Long Shelf Life 360 도 전경카메라 ( 카메라 모듈부분 방수 적용 ) Frame Part Frame+Front cover SKEF-1222N Specific Physical FormLiquid Viscosity @25 ℃ 8,000~10,000 cps Color(Solid)Slightly yellow Substrate 25 ℃ PC1000 ABS700 PMMA870 SUS(304)500

7. GUV-1010/1010SGUV-6009BJ/6009BS Cure method UV cure Main componenet URETHANE ACRYLATE URETHANE ACRYLATE Color BLACK Specific gravity 1.526~1.528/1.02~1.081.03~1.05 Viscosity, cps at 25 ℃ 6,000 ~ 8,000/3,000~8,0002,000 ~ 4,000 Refractive index -- Cure Condition 365~410nm, Min. 3,000mJ/cm 2 365~410nm, Min. 3,000mJ/cm 2 Hardness SHORE A TYPE 16/8SHORE A TYPE 97/57 Thermal resistance 120 ℃ Environment-related content RoHs, Halogen, Antimony, phthalates free RoHs, Halogen, Antimony, phthalates free Storage condition Room Temp. (15~30 ℃ ) Non volatile matter Min. 99% Guarantee Period 9 months from production date 9 months from production date Benefits Fast cure Easy application Sealing, adhering and fixing purpose of electrical parts. Wire Fixation