I spent some time figuring out as best I could the hanzi written inside my blue 16mm switch boots from INTL-OUTDOOR. The website shows out of stock on these boots and I’d also like to know if orange or other colors are available elsewhere… and what else these people make, if anything. The boots are high quality.
Inside the boot there are four hanzi characters and a trademark symbol. One pair of characters is above the nub/post and one pair is below with the trademark symbol next to it.
东莞
万城™
I’m certain about the first, third, and fourth symbol. My remaining boot has a couple of tiny blemishes inside the second symbol which prevent me from being positive, but I believe that I’ve got that right as well.
I just checked a Roche F12 host I purchased from Fasttech. It came with a black 13.5mm boot with identical markings. The markings are even sharper on that boot, so I took it outside in the sun and got a good look at it with my loupe. The second character, 莞, is slightly stylized in that 宀 and the horizontal stroke below it connect seamlessly where the Internet tells me that those should be separate strokes. That really held me up for a while.