Author: Guangdong ink factory Tanhong Min
With the improvement of people's bra
Author: Bai Songfang
The screen angle refers to the acute angle between the center
Author: Lin water
In computer layout, the output of film (including laser printer
1. No color achromatic color
A color with zero saturation, that is, gray at all le
Now manufacturers of hardcover books generally have shell making machines and hardcover li
In 2004, crude oil rose sharply, which caused great pressure to downstream production ente
With the development of society, people have higher and higher requirements on the quality
The stock solution was prepared and weighed about 50.0mg Sudan red pigment standard. S
The intelligent bottle recycling machine, as a new form of r