The Second LINK3900 dynamometer arrived at Hipad on January 3,2018. After more than 1 month of debugging, the LINK3900 dynamometer began to run normally. The ECU can control humidity above -12 ° C, which is the third ECU in the world to control humidity in this temperature range. With the increasing business of OE projects, more development and testing work have been undertaken by the LINK platform. Our R & D Center has 5 inertia platform, including  2 LINK3900 inertia noise platform,  1 LINK3000 platform , 1 Commercial Vehicle Platform and 1 domestic platform.