Since its establishment, the company has always adhered to the quality policy of "scientific management, strict standardization, excellence and striving for first-class", and implemented the principle of "quality is benefit and quality is the lifeline of the enterprise". The quality inspection department, process inspection team, physical laboratory, measurement room and direct reading spectral analysis room are established and improved: ultrasonic, eddy current flaw detection and hydrostatic test room, with nationally recognized level I and II inspectors and professional technicians, and cooperate with the effective operation of ISO9000 quality system. From raw materials into the company to finished products out of the warehouse, the quality assurance department cooperates with the internal audit team according to the procedures Control by documentation and standardization. A total quality control network has been formed, and regular or irregular supervision and inspection are carried out to ensure that the qualified rate of ex warehouse reaches 100%, and the products are well-known among users.