3rd Quarter of 2019 and 9-months period ending 30 September 2019 To The President The Stock Exchange of Thailand We, ZEN Corporation Group Public Company Limited (“the Group”), are pleased to provide

No: AH 02022022 February 28, 2022 Subject: Management Discussion & Analysis (MD&A) for the financial statements of fiscal year 2021 ended as of December 31, 2021 To: The President The Stock Exchange of

Limited To: Director and Manager The Stock Exchange of Thailand As the Board of Directors Meeting of Wiik & Hoeglund Public Company Limited ("the Company") No. 5/2018 on October 12, 2018, approved Wiik

ที่ กตพ Ref. DBP. 108 / 2019 August 13, 2019 Subject : Clarification on Operating Results for the 2nd quarter and 6-month Period ending June 30, 2019 To : President The Stock Exchange of Thailand

contribute high gross margin; 4) marketing activities to help dry stock at trade stores and prepare for new packaging launch in Q3; and 5) increased administrative expenses from higher personnel expenses to

Company started trading its newly issued stock on 15 February 2017. Issued and paid-up share capital Ownership interest 30 June 2017 30 June 2017 Name of the entity Type of business Baht % 80.00 99.27 Car

Ref. DBP. 068 / 2018 May 14, 2018 Subject : Clarification on operating results for the 1st Quarter ending March 31, 2018 To : President The Stock Exchange of Thailand Diamond Building Products Public

products such as steel, which is the main raw material in steel. In 2019, the steel price remained fluctuation, uncertain. Therefore, the Company has planned stock procurement to manage the changing of steel

production after TAM, and KSL Green Innovatioin Plc. recorded an increase in total sales. However, ethanol business gross profit was affected by the raw material cost, such as the rising molasses price and

to investors in private placement, the acquisition of assets and convening the Extraordinary General Meeting of the Shareholders No. 1/2018 (Revise) To : President, The Stock Exchange of Thailand