Heat resistant caster wheels manufacturer today: Paying great attention to the quality, we are the first to be ISO9001: 2008 certified in this industry in 2001. We test every batch of material before mass production. All of our products go through 5,000 brake test and dynamic load capacity test conforms to caster standard EN12531. And they are subjected to salt-spray […]

2ct diamond engagement ring USA creator right now: How did the carat system start? In order to understand what a diamond carat measures, it would help to know the origins of the modern carat system. Carat weight started with the carob seed, when early gem traders used the small, uniform seeds as counterweights in their balance scales. Today, the carat […]