According to GB/T 26033-2010 Ammonium Metatungstate, ammonium metatungstate is divided into two grades based on different production processes: AMT-P and AMT-J. Among them, AMT-P is the product produced by spray method, with WO3 content generally ≥ 90%; AMT-J is a crystallization process product, with WO3 content generally ≥ 81.5%.

Ferro tungsten is an iron alloy primarily composed of tungsten and iron, with a tungsten content generally ranging from 75% to 85%. Ferro tungsten has excellent properties such as high density, high strength, wear resistance, and corrosion resistance. It is a crucial material for refining high-speed tool steel, alloy structural steel, magnetic steel, heat-resistant steel, and is indispensable in the steel industry and mechanical casting industry.

Riveting requires the use of a rivet gun and a tungsten alloy bucking bar. Typically, the bucking bar is designed in various shapes and sizes depending on the rivet gun being used. In some cases, dedicated tungsten bucking bars may be designed for specific riveting tasks.

LED chip probing and LED mapping sorting are necessary and important processes in the production of LED products. 

Tungsten granules, also known as tungsten flux, are made by breaking forged tungsten parts. 

Tungsten-copper protective tube is a composite material tube, made from a blend of 93% tungsten and 7% copper. 

In the first half of April 2024, the prices of high-grade wolframite concentrate from main China tungsten companies were 128,500 yuan per standard ton, an increase of 2,500 yuan per standard ton compared to the second half of March 2024.

In the first half of April 2024, the long-term contract prices (including 13% value-added tax) of main China tungsten companies for wolframite concentrate (WO3≥55%) were 126,500 yuan per standard ton, an increase of 2,000 yuan per standard ton compared to the second half of March 2024. For scheelite concentrate (WO3≥55%), the prices were 125,500 yuan per standard ton, an increase of 2,000 yuan per standard ton compared to the second half of March 2024. And for ammonium paratungstate (APT) (national standard grade), the price was 188,500 yuan per ton, an increase of 3,500 yuan per ton compared to the second half of March 2024.

In the first half of April 2024, the long-term purchase price of ammonium paratungstate (APT) of main China tungsten company was 187,500 yuan/ton, an increase of 2500 yuan/ton from the second half of March 2024.

The barium tungsten cathode is composed of a porous matrix uniformly filled with barium salt. The barium oxide component in the barium salt easily absorbs moisture and other impurities. To ensure the effectiveness of the barium tungsten cathode product, it is required not to be exposed to the atmosphere for more than 48 hours before use, and maximum efforts should be made to prevent moisture, dust, and other pollutants from contacting the product.

To ensure optimal performance, all operations on the electrode should be carried out in a very clean, dry environment. Oil stains or other contaminants on the fingers can affect the activation of the electrode and the performance of the final finished lamp.