Dear Porpol,
I appreciate your suggestion but it would not work in my case. As explained I am not a contractor but motivated to introduce a better technology to the local market and apply this on our kitchen.
I understand this humble project may not seem to attractive to you but please do not forget that I even offered to advertize your product on the farang website thaivisa.com in addition to showcasing to local contractors and hardware store subsidiaries.
The fact that your products are not available here should tell you something -probably as it did not have high priority-. Maybe this is something that Fongarpa Pattrayus should decide on?
Buying a huge quantity makes no sense and for you the cost of samples is negligible while the opportunity to gain a market you missed is not a bad prospect I would say.
But if you are not interested, we'll just let it go. In that case there is no need to answer and I would not write you again.