With the increase of population, the advancement of technology, and the pursuit of quality of life, the demand for resources is increasing. However, resources themselves are not inexhaustible. Therefore, the purpose of recycling is to utilize the characteristics of recyclable resources, make reasonable use of limited resources, and avoid environmental pollution caused by arbitrary disposal“

Sulfur is the main pollutant emitted from oil products. In recent years, in order to reduce environmental pollution, the sulfur content in automotive gasoline and diesel has been strictly restricted globally. Currently, the sulfur content standard for automotive gasoline and diesel is ≤ 10mg/kg.

The plating process is widely used in hardware products, and the development of science and technology and modern industry has made the quality standards and control of hardware products increasingly strict, thereby standardizing the development and quality control of plating technology. The content of quality inspection for products with different coatings varies depending on the parts and coatings, but the appearance, thickness, corrosion resistance, and adhesion to the base metal of the coatings must be inspected for all coatings. The thickness of the coating is the most important guarantee factor for the quality of the plated parts.

With the release and implementation of RoHS 2.0, four new phthalates - DEHP, BBP, DBP, and DIBP - have been added to electrical and electronic products for restricted testing of controlled substances. There have also been new changes in the detection methods and related instruments for hazardous substances in electrical and electronic products.

The three-way catalyst is the most important external purification device installed in the automobile exhaust system. It can convert harmful gases such as CO, HC, and NOx emitted from automobile exhaust into harmless carbon dioxide, water, and nitrogen through oxidation and reduction. Due to its ability to simultaneously convert three major harmful substances in exhaust gas into harmless substances, this type of catalyst is called a three-way converter.

Lubricating oil is a liquid or semi-solid lubricant used in various types of automobiles and mechanical equipment to reduce friction, protect machinery and processed parts, mainly for lubrication, cooling, rust prevention, cleaning, sealing, and buffering purposes.

For a long time, heavy metal pollution has been one of the main reasons affecting the quality and safety of food in China. According to statistical data, heavy metal pollution leads to an annual reduction of more than 10 million tons of grain production in China, with over 1200 tons of grain contaminated by heavy metals each year, resulting in a cumulative economic loss of 20 billion yuan.

With the implementation of the National Action Plan for Soil Pollution Prevention and Control (referred to as the "Ten Measures"), it is urgent to strengthen soil pollution monitoring and prevention. This article takes the Wave Sound TrueX Soil Heavy Metal Analyzer as the object, measures Cr, Ni, Cu, Zn, As, Pb elements in soil, and conducts data analysis to demonstrate the feasibility of the instrument in soil heavy metal environmental monitoring with excellent performance and accurate measurement results.

Brass is an alloy closely related to human beings. Due to its excellent conductivity, thermal conductivity, ductility, corrosion resistance, wear resistance and other characteristics, it is widely used in fields such as power, electronics, energy and petrochemicals, machinery and metallurgy, transportation, light industry, emerging industries, etc. It is second only to aluminum in the consumption of non-ferrous metal materials in China.

Lead antimony alloy has the advantages of corrosion resistance and long life, mainly used for the positive plate of lead-acid batteries. In recent years, the market size of lead-acid batteries in China has maintained stable growth.

Connectors have the characteristics of easy mass production, easy maintenance, easy upgrading, and improved design flexibility, and are widely used in various fields such as aerospace, communication and data transmission, new energy vehicles, rail transit, consumer electronics, energy, and healthcare. With the continuous upgrading of electronic device performance, the structure of connectors is becoming increasingly diversified, and new structures and application fields are constantly emerging. At the same time, there are higher requirements for the quality of connectors.

With the rapid development of industry and the increasingly widespread application of plastic electroplating, it has become one of the important means of surface decoration in plastic products At present, electroplating has been widely applied on the surfaces of plastics such as ABS, polypropylene (PP), polysulfone, polycarbonate (PC), nylon (PA), phenolic glass fiber reinforced plastics, polystyrene, etc. Both domestically and internationally. Among them, ABS plastic electroplating is particularly widely used and has good electroplating effects.