尖酸一点
发表于 2025-3-28 14:47:50
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jarring
发表于 2025-3-28 19:14:44
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cogent
发表于 2025-3-28 23:27:37
Solvents,f their activities in colors on the walls of their caves. These crude coatings consisted probably of colored earths or clays suspended in water. The Egyptians developed the art of painting and by 1500 BC had a wide number and variety of colors. Around 1000 BC they discovered the forerunner of our pr
cajole
发表于 2025-3-29 04:10:18
Emulsion and solution polymers, impart very specialized performance attributes to water based inks and coatings. Although some experts feel that acrylics have reached their maximum technical capability in water based systems, they still dominate the industry. As emission regulations force printers into converting the most demandi