The only way to get a proper answer to that is to ask them. We can only speculate. Maybe it's not as popular as other Thai NDT brands and they're not making enough profit on that product and it's not worth them producing it. We just don't know.
OK I see, I noticed it was still for sale on the site use that's why then
Nobody seems to know why (manufacturer has not provided any information) but, when they started making TR, the other two brands had already been around for a few years. I guess those who are happy on either Thyroid-S or Thiroyd would not consider switching to a different brand, so what SeasideSusie says makes sense to me. Also, I could not find many reviews on TR, compared to the other two Thai brands. I remember thinking that if I was planning to switch to a Thai brand, I would have chosen one of the other two given the great reviews on both Thyroid-S and Thiroyd. It seems likely that TR never got a big enough market share.
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