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2012

2012

(Summary description)Started to expand overseas business and develop markets in Vietnam, South Korea, Japan and Thailand

2012

2012

2012

2012

(Summary description)Started to expand overseas business and develop markets in Vietnam, South Korea, Japan and Thailand

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Started to expand overseas business and develop markets in Vietnam, South Korea, Japan and Thailand

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Previous: 2011
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Exhibition

Exhibition News: Progold to Shine at the Shenzhen International Jewelry Fair

As we welcome the refreshing breeze of a new season, let us embark on a journey through the beautiful autumn. The highly anticipated 2024 Shenzhen International Jewelry Exhibition will be grandly held from September 14 to September 18 at the Shenzhen Convention and Exhibition Center in Futian. Being a leader in the Italian jewelry manufacturing industry, Progold looks forward to gathering with jewelry enthusiasts, professionals, and industry partners from around the world to showcase its outstanding products and technologies.
2024-09-02
How

How to achieve environmentally friendly chromium-free passivation of aluminum alloys and other metals

In the passivation treatment process of aluminum alloy surface, countless researchers have done in-depth research. At present, the passivation treatment method of chromate is widely used in the market. The passivation effect of this kind of heavy metal passivation process is acceptable, but it has serious environmental pollution, especially the passivation method such as the use of hexavalent chromium passivation agent, which is also very toxic. In view of this situation, research on chromium-free passivation has also been carried out. Now there are chromium-free passivators that have been put into production. Then, how to achieve the environmental protection of aluminum alloy and other metals without chromium passivation?
2023-03-16
Research

Research progress of acrylic emulsion and its application in industrial coatings!

The performance of acrylic emulsion has a great relationship with the structure. Different structural designs provide different performances. Figure 1 shows the common acrylic structural design in current literature reports [3]. Among them, monodisperse is the most common and simplest type. Most acrylic emulsions are of monodisperse type, with simple process, easy-to-control structure, and stable product quality; most of the researches on core-shell structure[4], there are also structures with special functions, such as bimodal structure, blended structure, multi-microdomain structure, multipolar structure, hollow sphere structure [5], polymer-pigment composite structure [6], etc. Under the premise of ensuring good film-forming performance, the structure designed by synthesis can improve certain performance, meet customers' requirements for different performance [7], and expand the performance range and application field of acrylic emulsion.
2023-03-16
From

From chromate passivation to chromium-free passivation, what kind of advancement has the galvanized passivation technology experienced?

As a surface-covering protective layer, metals often require additional protective measures to ensure that they meet the corrosion resistance requirements in a certain environment. For example, when zinc is used as a metal surface covering layer, it needs to have sufficient thickness to protect the base metal, mainly relying on the sacrificial anode function of the zinc layer and the dense basic zinc carbonate film formed on the zinc surface in the atmosphere and neutral water environment isolation protection.
2023-03-16
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