This is a spherical plastic blister colorful luminous letter made of imitation metal blister plate in the "Peng's plastic lettering method" technology. It looks like titanium and can emit light from the front and in seven colors. There are also colored stainless steel metal effects such as white steel, rose gold, and electroplating.
Peng's calligraphy method is a patented project in the advertising industry. The technology is spreading across the country and anyone interested can introduce it.