How to buy gold jewelry
1. Imprint: In accordance with national product standards, there should be a color mark "Foot Gold 990" or "Thousands of Gold 999" on the jewelry product, the manufacturer's mark.
2. Color: Gold or thousands of gold is bright golden yellow, and the luster of copper is blinking.
3. Weight: The density of gold is more than twice that of copper. The same volume of gold and copper, gold has a clear feeling of falling.
4. Hardness: Use nails to move on the gold or thousands of gold, with small traces, but not on the copper.
How to choose platinum jewelry
1. Imprint: According to the national product standard, the platinum chemical symbol Pt and platinum content and the manufacturer's mark should be on the platinum jewelry.
2. Color: The color of platinum jewelry is gray and white, with bright luster and never changing color. Silver is mostly white with yellowish yellow, K white gold is not bright with platinum, and white with blue.
3. Weight: The density of platinum is more than twice that of silver. The same volume of platinum and silver, platinum has a significant drop.
4. Hardness: Since platinum is harder than copper, it can't be scratched with copper wire, and silver is scratched with copper needle.
How to choose K gold series jewelry
1. K gold is divided into yellow K gold, red K gold, white K gold, color K gold, and three K golds are popular in the Chinese market.
2. K gold is divided into 22K, 18K, 14K, etc. according to its content, and must be printed by the manufacturer, which must be carefully identified.
How to choose inlaid jewelry
1. Check for loose jewels on the inlay.
2. It is best to have an identification certificate from the local testing agency.
3. Observe with the help of relevant inspection tools, such as magnifying glass, diamond pen, etc.
4. Through trial and comparison, there will be more experience in purchasing.
Changxing Baihong nonwoven fabric Co., Ltd. is located in the beautiful Taihu coast, Hongxing Bridge Industrial Park, Changxing County, Zhejiang. Over twenty years experience of production and industrial chain advantages of Adhesive Interlining, the company has made a high starting point at the beginning of the both woven and non-woven fabric line.
The company has achieved the annual production capacity of two thousand tons of multi-purpose hot-rolled non-woven fabrics each year and product gram weight range from 16 gsm to80 gsm.
B.H Interlining, Best service with High-end Interlining. Deserve your trust!
Polyester Interlining,Polyester Woven Fusible Interlining,Polyester Fabric Interlining,Polyester Fusible Fabric Interlining
ChangXing B.H Interlining Co.,Ltd , https://www.bhinterlining.com