I've been using electrochromic ink from Chameleon ...

I've been using electrochromic ink from Chameleon Optics Inc. for a while now, and I must say, it's impressive. The ink is of the highest quality and performs exceptionally well. The team at Chameleon Optics Inc. is knowledgeable and always ready to assist with any inquiries. I highly recommend their products for anyone in need of electrochromic solutions. You won't be disappointed.