Many production of metal materials, manufacturers are these efforts, conductivity and temperature directly affect contact resistance, chemical elements and material quality of elasticity, elastic modulus, hardness, tensile strength related to the elastic modulus of selecting material mechanics The formula to calculate the fourth strength theory. The greater the conductivity of the material, the more lower contact resistance small temperature rise, and plug the power relations and the contact resistance to a quadratic curve, the contact resistance is divided into: compression resistance, the film resistance, volume resistance (resistance of the conductor itself) . 70 to 80% of the total resistance of the film resistors, chassis power line color, is also a major factor in the impact of the life of the connector, should be given adequate attention, with regard to the terminals to more than Gold and silver plating, although conductivity than gold to silver high, but no gold good chemical stability, resistance film caused far greater than gold, so find out the relationship between the above there is the choice of materials for our guidance, is a prerequisite for product design. 2 standard terminal section 10 of the mechanical properties test, test and plug terminal 11 insertion - pull out the standard terminal test material used should be non-plated brass, chassis power lines, equivalent to C26000 2.2 temperature alloys in Section 12 and the standard terminals used in thermal cycling tests shall be tin plate or corrosion-resistant steel chassis power cord GM, according to Rockwell 30T hardness standard hardness of Rockwell hardness 68 ± 5. Exception: Only if the female terminals connected to a copper alloy male terminal, then when you need to use a standard terminal C26000 copper alloy tested. 2.3 by Rockwell 30T hardness standard, made of standard terminals brass hardness of 62 ± 7 terminals with increasingly fierce market competition, the chassis power cord connector quickly and effectively grasp the market developments and become successful decision makers key. Market analysis is a scientific system of work, a direct impact on enterprise development strategy planning, product design marketing programs to determine the company's investment policy formulation and future directions. Report to the National Bureau of Statistics, State Customs, industry associations (school) will and business research data base. To ensure the content of the report informative, accurate, reliable and comparable data between the reporting of statistical data necessary filtering, grouping, and macro and micro data closely. Report uses quantitative analysis based (including the application of economic statistical models, etc.), quantitative and qualitative analysis methods, dig data contains inherent law and potential information. Chassis power cord specifications, chassis power lines, Xu Chong-electronic products factory by the Dongguan Shijie Xu Chong-electronic products factory provided. Dongguan Shijie Xu Chong-electronic products plant (chuangxs.1688.com) (www.chuangxs.1688.com) strong, credible, connectors, and other industries in Dongguan, Guangdong has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Xu Song Chong electronic products factory into the brilliant and you work for a better future!