Mr. Bob attended the Solar Energy Expo and Water Pump Expo held in June 2018 in Bangkok. One of the new products he tested arrived today in Buriram. Top grade UPVC | PVDF pipe products including flanged Diaphragm Valves | True Union Check Valves | Butterfly Valves | Lockable Ball valves. These plumbing products are approved by American NSF/ANS114 drinking water standards. This morning a German expat who owns a resort purchased several dozen of this top grade plumbing products to upgrade his Phi Mai resort water filter system and swimming pool filter pump room. Mr Aud or any of the bi-lingual staff of Ruangsangthai will be pleased to show you the difference between this new brand founded in Taiwan and the "normal" valves sold in Buriram. Customer requests led to my purchasing and paying in advance for this "step up" of valves for Isaan home owners. Thank you, Mr. Pichai.