December 31, 2017 by Bt326.3 million or 4.3%. Please be informed accordingly. Yours sincerely, Signed (Mr. Prakobkiat Ninnad) Managing Director Investor Relations Division, Finance and Accounting Department

and Managing Director

แบบแสดงรายการข้อมูลสำหรับการเสนอขายหลักทรัพย์ (แบบ 69-1) 1 No. WHAUP-CS020/2018 May 10, 2018 Attention: Managing Director – Stock Exchange of Thailand Subject: Report of Financial Results for the

and service fee and other non-current liabilities. Please kindly be informed accordingly. Sincerely yours, Mr. Opas Sripayak Chief Executive Officer and Managing Director

in non-social security revenues portion which granted shorter credit term. However, average inventory day increased. Please be informed accordingly. Yours sincerely, (Mr. Surin Prasithirun) Managing

. Yours sincerely, Mr. Sompol Tanadumrongsak Managing Director

. Chaiyasit Samrittivanicha) Managing Director http://www.ndrubber.co.th/

(2.99%) After Revision Please be informed accordingly. Sincerely yours, Mr. Opas Sripayak Managing Director

to make a profit from the operation. Please be informed accordingly, Sincerely yours, Vee Worasakyotin Managing director

, Yours sincerely, Mr. Monthon Chatuwallopkul Deputy of Managing Director