Nanjing Sample Technology Company Limited — Proxy Solicitation & Information Statement 2018

May 31, 2018

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(a joint stock limited company incorporated in the People’s Republic of China with limited liability)

(Stock Code: 1708)

Shareholders’ reply slip for attendance at the Class Meeting for holders of the H Shares (the “Class Meeting”) to be convened on Friday, 29 June 2018

To: Nanjing Sample Technology Co., Ltd. (the “Company”)

I/We (Note 1)

holder(s) of

of (Note 1) being the registered (Note 2) H Shares

of the Company hereby inform the Company that I/we will attend the Class Meeting to be held at No. 10 Maqun Avenue, Qixia District, Nanjing City, Jiangsu Province, The People’s Republic of China on Friday, 29 June 2018 at 10:30 a.m. in person or by proxy.

Dated this day of, , 2018 Signature:

Notes:

1. Please insert full name(s) and address(es) as recorded in the register of members in BLOCK LETTERS .

2. Please insert the total number of shares of the Company registered in your name(s).

3. To be valid, this reply slip should be completed and returned to the Company’s H Share registrar in Hong Kong, Computershare Hong Kong Investor Services Limited at 17M Floor, Hopewell Centre, 183 Queen’s Road East, Wanchai, Hong Kong on or before Friday, 22 June 2018. The reply slip may be delivered by hand or by post.

* for identification purpose only