Confidential and Proprietary to Sunnywell China

Sunnywell Wire: Creating Extra Value for Wafering

Sunnywell (China) New Material Technology Co., Ltd. Oct. 2019

PASSION · COLLABORATION · WIN TOGETHER

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- Company Name: Sunnywell (China) New Material Technology Co., Ltd.

- Place of Registration: Jintan Economic Development Zone, Changzhou City,

Jiangsu Province

- Established on: Nov 3rd, 2010

- Employees: 496 (until April 2019, nearly 50% graduated from college)

- Registered Capital: 369 million RMB

- Investors: Global Leading PE firm Warburg Pincus from U.S.A + Chinese PE Firm Minghui

- Products: Sawing wire (Straight wire & Sabre wire), Diamond wire/ cable, Steel cord，

Hose wire and some superfine wires in various applications.

- Positioning: A leading brand with top quality

- M & A: 100% acquired Zhenjiang Naisi Advanced Materials Co., Ltd. in Dec, 2011

(Registered Capital: 200 million RMB)

Company Introduction

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Changzhou Plant

Zhenjiang Plant

Company Introduction Land for Phase One: 54 acres

Employees: 496 (April 2019)

Established on: Nov 2010

Production Startup: Jul 2011

- National High-tech Enterprise

- Innovation Practice Base for the Post-doctoral of Jiangsu Province

- Enterprise Postgraduate Workstation of Jiangsu Province

- Engineering Technology Research Center of Jiangsu Province

- Jiangsu R&D Transfer Project sponsored by the Provincial Government

- 2015 Deloitte-Jiangsu Technology Fast 30

Land for Phase One: 44 acres

Employees: 510 (April 2019)

Established on: Feb 2010

Production Startup: Dec 2010

- National High-tech Enterprise

- Fast Growing SMEs of Jiangsu Province

- Engineering Technology Research Center of Jiangsu Province

- Enterprise Technology Center of Jiangsu Province

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Customized Products & Optimized Process chart Competitive Advantages

Wire rod Φ5.5mm

Patenting & Phosphatizing

Patenting & Phosphatizing

Steel cord (Φ0.60-2.00mm)

Resin bonded diamond wire (Φ0.085-0.12mm)

Electroplated diamond wire

(Φ0.065-0.65mm)

Hose wire (Φ0.17-0.66mm)

Phosphated wire (Φ2.20-3.50mm)

Phosphated wire (Φ 0.17-0.66mm)

Phosphated wire (Φ1.20-2.20mm)

Patenting & brass coating

Wet drawing Wet drawing

Patenting & brass coating

Stainless steel wire (Φ1.6mm) Drawing Patenting Drawing Patenting Patented wire for mesh & tube

(Φ0.035-0.40mm)

Unpatented wire for spring, etc (Φ0.035-0.40mm)

Galvanized fine cable (Φ 0.30-2.00mm)

Wet drawing

Bunching

Wet drawing

Sawing wire & Core wire (Φ 0.05-0-0.35mm)

Raw materials Processing Products

Brass coated wire (Φ 0.17-0.66mm)

Brass coated wire (Φ 0.60-1.20mm)

Patenting & Galvanizing Patenting

2nd drawing (Φ1.20-2.20mm)

Galvanized wire (Φ0.60-2.20mm)

Galvanized wire (Φ 0.08-0.66mm)

Sawing wire (Straight / Sabre wire) (Φ0.09-0.30mm)

Bunching

Brass coated wire (Φ 1.20-2.20mm)

1st drawing

2nd drawing (Φ0.60-1.20mm)

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World class workshop management Competitive Advantages

Pay-off units HP workshop

WWD machines WWD workshop

Metallographic Lab Chemical Lab

Mechanical Lab Analysis Lab

First class raw materials are used

▪ Wire rod: from Japan ▪ Dry drawing soap: from Germany

▪ Drawing dies: from Sweden ▪ Wet drawing lubricant: from France

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Advanced lab equipment

Competitive Advantages

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Developed superfine sawing wire (50/55um), sabre wire, electroplated diamond wire (EW), resin bonded diamond wire (RW), diamond cable (DC), and steel cord (ST/UT), etc.,

Strong R&D capabilities

- New product:

- Product property:

- Diversification:

- Patent:

- Enterprise specification:

The filament TS of 65um reached 4738Mpa, which was tested by Shanghai Micro-spectial Chemical Analysis and Test Technology Co., Ltd. on Apr 20, 2018;

Widest product range in the industry; not only for solar market, but also apply to sapphire, crystal, magnetic material and tire reinforcement markets

Applied 99 invention patents and 111 utility model patents, in which 22 invention patents and 88 utility model patents authorized;

Established internal Spec for DW and DC, which was released on Dec 1st, 2014

Competitive Advantages:

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① Market leader of Core wire (Φ50/55μm)：

Advantages: ▪ 7.5% less on kerf loss and 7% more on yield ratio compared with

diamond wire made with core wire Φ65μm

Private technology: ▪ Special die series designed for 50/ 55μm core wire

Superfine sawing wire ▪ Special device to filter defects

② New developed Sabre wire :

Advantages: ▪ Excellent ability of carrying slurries

▪ The sawing ability increased by 20%

▪ The cost of slurries reduced by 25%

Private technology: ▪ Advanced wire preforming technology

Sabre wire ▪ Special drawing lubrication technology

▪ Innovative winding device

③ Successful development of Diamond wire and Diamond cable:

Advantages: ▪ Excellent fixation of diamond powder on the core wire, with enhanced

retention and controlled protruding ratio

▪ Special high-speed electroplating process to attain uniform distribution

of diamond powder and eliminate the diamond powder overlapping ▪ Automatic equipment and stable process

Private technology: ▪ Diamond cable = Superfine wire + Cord + Diamond wire

Product portfolio - Sawing Products

Diamond wire

Diamond cable

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Semiconductor wafering/ PV sawing/ Crystal slicing and chipping/ Sapphire sawing

Sawing Wire application

Sawing Wire products

Sawing Products (Straight wire + Sabre wire)

* L: Sabre wire

* Customized products available upon request

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− Core wire for diamond wire

Application

Products

Sawing Products (Core wire)

Electroplated diamond wire

Resin bonded diamond wire

* Customized products available upon request

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* DC: advanced sawing diamond cable invented by Sunnywell * Customized products available upon request

Sawing Products (Diamond wire/ cable) − Diamond Wire and Cable: hard and brittle crystalline material sawing tool

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Field SW DW Application

Photovoltaic industry √ √

Semiconductor √ √

Sapphire cutting × √

Crystal rods Chip Bricking/ Slicing Application

Sawing Products (Applications)

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Customer References - Sawing Wire

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Other Industry Products

1）Steel cord

1. Filament 2. Strand 3. Cord 4. Spiral wire

胎圈丝

带束层

外胎面

胎体

胎圈丝

带束层

外胎面

胎体

2）Galvanized wire 3） Phosphated wire

5）Stainless steel wire 4）Hose wire

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The information contained in this document is intended only for use during the presentation. Sunnywell accepts no liability whatsoever with respect to the use of this document or its content. Copyright protection exists in this presentation. The contents of this presentation are strictly confidential and it may not be disclosed, reproduced, distributed or published by any person for any purpose without written consent of Sunnywell.