Chemically synthesized diamonds flow quietly from Hong Kong into the Mainland

When you buy a good-quality big carat diamond at a discount of about 10% below the market price, don't be too happy. Maybe this diamond is a chemically synthesized fake diamond. The Consumer Alert issued by the Shanghai Gold Jewelry Industry Association yesterday stated that a diamond synthesized by chemical vapor deposition (referred to as CVD diamond) has quietly flowed into the mainland through Hong Kong. The National Jewelry Quality Supervision and Inspection Center has detected it. Two batches. The center found in the test that this chemically synthesized diamond is very similar to natural diamonds and is difficult to distinguish from natural diamonds by the naked eye. To this end, the City Gold Jewelry Industry Association reminds consumers that when purchasing diamonds, they must enhance their awareness of rights protection, retain invoices and corresponding quality inspection certificates, and go to the professional inspection agencies set up by the national quality inspection department in this city to carry out true and false identification. . The Shanghai Gold Jewelry Industry Association said in the consumer warning that this is the latest "fake inflow" problem. The National Jewelry Quality Supervision and Inspection Center (NGTC) has discovered two batches of chemical vapor deposition methods in the recent daily commission inspection. Synthetic diamonds, mostly around 0.5 carats, are nearly colorless, mostly VS grades. It is difficult to distinguish them from natural diamonds with the naked eye and microscopic magnifying glass. After detection by Diamond View, blue-green fluorescence and blue phosphorescence are visible. , a growth texture with the characteristics of a synthetic method. The NGTC laboratory identified the conclusion as a CVD synthetic diamond and was heat treated after synthesis. According to experts from the Gold Jewelry Industry Association, since this chemical synthetic diamond is mainly imported from the mainland through the legal procurement channels of Hong Kong, China, and the trading rules of natural diamonds are used, the supplier has not made any explanation, and the price is only lower than natural diamonds. About 10%, it is very easy to get away with it. At present, the National Quality Inspection Department has set up professional testing institutions at Yayijin Store, No. 288, Fuyou Road, Shanghai, Yuyuan Garden , Laotang Gold, No. 88, Lishui Road, and No. 1288 Sichuan North Road, to strengthen diamonds, etc. Identification of natural gemstones.

Flooring Industry Abrasives

The flooring industry is a vast industry that encompasses a wide range of products and services related to the installation, maintenance, and repair of floors. Sanding discs, sanding sponges, and abrasive belts are widely used in the flooring industry for various applications. These tools are essential for sanding, smoothing, and finishing floors, and they play a crucial role in achieving a high-quality finish.

Sanding Discs

Sanding discs are circular abrasive discs that are used for sanding and finishing floors. These discs come in different sizes and grits, and they can be used on a variety of surfaces, including wood, concrete, and metal. Sanding discs are commonly used in the flooring industry for sanding and finishing hardwood floors.

Hardwood floors are a popular choice for homeowners and commercial properties due to their durability, beauty, and longevity. However, over time, hardwood floors can become scratched, worn, and damaged, which can detract from their appearance and reduce their lifespan. Sanding discs are used to remove the top layer of the hardwood floor, which removes scratches, stains, and other imperfections. This process also smooths out the surface of the floor, preparing it for refinishing.

After the hardwood floor has been sanded with a Sanding Disc, a new layer of finish can be applied to the floor. This finish can be a stain or a clear coat, depending on the desired look and level of protection. The sanding disc is essential for achieving a smooth, even surface, which ensures that the finish adheres properly and lasts for a long time.

Sanding Sponges

Sanding sponges are handheld abrasive tools that are used for sanding and finishing floors. These sponges are made of flexible foam and are coated with abrasive particles, which make them effective for sanding and smoothing surfaces. Sanding sponges are commonly used in the flooring industry for sanding and finishing concrete floors.

Concrete floors are a popular choice for commercial and industrial properties due to their durability, strength, and low maintenance requirements. However, over time, concrete floors can become stained, scratched, and damaged, which can detract from their appearance and reduce their lifespan. Sanding sponges are used to remove the top layer of the concrete floor, which removes stains, scratches, and other imperfections. This process also smooths out the surface of the floor, preparing it for refinishing.

After the concrete floor has been sanded with a Sanding Sponge, a new layer of finish can be applied to the floor. This finish can be a stain or a clear coat, depending on the desired look and level of protection. The sanding sponge is essential for achieving a smooth, even surface, which ensures that the finish adheres properly and lasts for a long time.

Abrasive Belts

Abrasive belts are long, narrow abrasive tools that are used for sanding and finishing floors. These belts are made of a flexible backing material that is coated with abrasive particles, which make them effective for sanding and smoothing surfaces. Abrasive belts are commonly used in the flooring industry for sanding and finishing metal floors.

Metal floors are a popular choice for commercial and industrial properties due to their durability, strength, and resistance to fire and moisture. However, over time, metal floors can become scratched, worn, and damaged, which can detract from their appearance and reduce their lifespan. Abrasive belts are used to remove the top layer of the metal floor, which removes scratches, stains, and other imperfections. This process also smooths out the surface of the floor, preparing it for refinishing.

After the metal floor has been sanded with an Abrasive Belt, a new layer of finish can be applied to the floor. This finish can be a paint or a clear coat, depending on the desired look and level of protection. The abrasive belt is essential for achieving a smooth, even surface, which ensures that the finish adheres properly and lasts for a long time.

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