I'm agree, but i have some problem about 2 person as K.Wanchaloem and K.wirayut will could etching titanium and glass coat not yet. , I accept, but there are some problems with 2 people is K.Wanchaloem and K. wirayut can bite titanium and glass coat or not, because they have not been training on. With just a training venue only. I think that may be a Training engineers came before it.
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