Rubies and sapphires are both beautiful and transparent corundum, also known as sister gemstones. The main reason is that both are corundum minerals. The basic chemical composition of both is Al2O3, and the Mohs hardness is 9. Because both colors are It is very beautiful,
Read moreAbstract: This paper introduces the characteristics, composition, application range and application examples of the non-halogen flame retardant for glass fiber reinforced nylon and polyester in UK. EPFR series glass fiber reinforced special halogen-free flame retardants are divided into two categor
Read moreInner Mongolia Autonomous Region Hulunbeier Chenbaerhuqi East Wuzhuer Sumu territory, recently discovered a number of late Eastern Han Dynasty cultural relics, one of the human face double horse gold ornaments for the first time in Northeast China, for the Mongolian source
Read morePassion August, the charm of the three-day "M & Q" spring and summer 2014 new orders will be hot! Clients from nearly a hundred cities nationwide participated in this event. The order will be grandly launched a variety of series of spring and summer boys and girls new apparel, the the
Read morePassion August, the charm of the three-day "M & Q" spring and summer 2014 new orders will be hot! Clients from nearly a hundred cities nationwide participated in this event. The order will be grandly launched a variety of series of spring and summer boys and girls new apparel, the the
Read moreHow to see the jade identification certificate First, look at the inspection agency. The state has strict qualifications for the quality certification of jewelry and jade. Only by passing the certification, the issued certificate is valid. The nationally certified jewelle
Read moreHow to see the jade identification certificate First, look at the inspection agency. The state has strict qualifications for the quality certification of jewelry and jade. Only by passing the certification, the issued certificate is valid. The nationally certified jewelle
Read moreRing size measurement method : [1] Use a wire to simulate a ring around a finger to make a round iron ring, ensure that the size of the iron ring is moderate, fix the iron ring and mark it, remove the iron ring and spread it into a straight line to measure the circumferen
Read moreRecently, India has demanded that China cut its import tax on cotton cloth and accelerate the implementation of the export agreements between the two sides on water buffalo and seafood products. This is to bridge the growing trade deficit between the two countries. At a meeting of senior
Read moreDo you like gold jewelry? As people's living standards improve, people's choice of jewelry is also broader. There are so many people who buy gold jewelry today, some are used to send relatives and friends, and some are worn by themselves. Gold jewelry is more and m
Read moreOn August 25th, in Xiamen, a beautiful island in the world of the island of Heron, a trade fair named "Chinese gentleman • retail wins" will be unveiled. As the most appropriate interpreter of the "Chinese gentleman", Fugui Bird will welcome its image spokesperson Lu Yi to
Read moreThroughout the ages, people's cherished love for crystal has given it a lot of names. Crystal, the oldest name in China is called water jade, which means water jade, and it is said to be "the ice of the millennium." The poet Wen Tingjun of the Tang Dynasty w
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