Shandong Ruixiang Mold Co., Ltd. produces non-destructive testing ultrasonic testing standard test blocks - SC sensitivity calibration test blocks, phased array test blocks, eddy current test blocks, magnetic powder test blocks, penetration test blocks, etc., which are widely used in various industries such as aviation, aerospace, nuclear power, and high-speed rail. The non-destructive testing industry is known as the "first block in China".