5.1 Classification of platinum-containing powder materials According to the different amounts of platinum contained in the products, the products are divided into platinum-poor materials and platinum-rich materials. Platinum in platinum-containing powder is the abbreviation of platinum group precious metals, including platinum, palladium, rhodium and other platinum group precious metals. 5.2 For the safety information of platinum-containing powders, refer to the "Contents and Project Sequence of Chemical Safety Data Sheets" (GB/T 16483), which proposes that platinum-containing powders should provide safety technical instructions when leaving the factory. 5.3 Technical requirements for platinum-containing powders stipulate the main technical parameters of platinum-containing powders, including platinum, palladium, rhodium content, appearance, particle size, moisture content and net content and other technical requirements. 5.4 Test methods for platinum-containing powders provide testing equipment and methods for platinum, palladium and rhodium content, appearance, particle size, moisture content and net content. Inspection