เรารู้ว่า "น้ำ" ทุกหยดของคุณมีคุณค่า

ไทย
Messer. THAI OBAYASHI CORP.,LTD.

We really appriciate for providing us with oppotunity to study Construction and M & E.

Our New graduated staff learned a lot of things from your lecture.

Thank you very much.