I took a bus past Isetan (อิเซตัน) department store at Central World today and noticed it has reopened for business as usual. We can say that a business has opened for normal business with the following sentence: เปิดให้บริกานตามปกติ
The complete sentence in Thai is as follows:
อิเซตัน เปิดให้บริการตามปกติ = Isetan has opened for business as usual.