The WJM Series represents a new generation of computer-controlled electro-hydraulic servo testing equipment, independently developed by Hualong Testing to optimize traditional static load anchoring testing technologies. Different from conventional anchoring test machines with limited control accuracy, this upgraded model adopts a three-closed-loop electro-hydraulic servo valve control system, realizing stable constant-speed loading and high-precision load retention throughout the entire test process. The intelligent control system effectively eliminates manual intervention errors, ensuring consistent and repeatable test data under complex test conditions.