Hi Geoff
I will come up with a video soon with the making of a slap. Yes, this is where I buy materials to do the flat pottery pieces for bonsai.
The oxide colours also can be used for clay.
I have just written to the company to hear if they can solve the English translation somehow to make it easier to sell abroad. I wait for their answer.
You also can use the google page translater. I add the site here where you can insert the url of the page and translate it.
Open http://itools.com/tool/google-translate-web-page-translator
and insert the page url from the company and click translate. If it works? I had some delays and a pending cookie running when testing it, but try and see if you succeed. 🙂