GB/T 4857.15-1999 specifies the controlled horizontal impact test method for transporting Encasement parts. The standard describes the purpose of the test, that is, to evaluate the ability of Encasement parts to withstand horizontal Impact. Specify the test equipment, such as horizontal Impact Tester, etc. Detailed test steps, including Encasement preparation, test parameter setting, Impact operation and result observation records. By simulating the horizontal Impact scenarios that may be encountered during transportation, the test according to this standard can inspect Encasement protection performance, help improve Encasement design, ensure that products are not damaged by horizontal Impact during transportation, and ensure the safe delivery of goods.