The company always regards quality as the lifeline of the enterprise. From the re inspection of raw materials to the final inspection of finished products, they are all controlled by a complete set of management procedures and organizational structure, and there are multi-disciplinary structural quality certification. The test pressure of the product is more than 3 times of the normal pressure, and the highest industry standard of the people's Republic of China (chemical industry standard HG / T2289 / 2001) is adopted. The longest shelf life is 5 years.