Monday to Friday from 8: 30 am to 6: 00 pm. According to the inquiry of official website of Huaqing Fluid Technology Co., Ltd., the working hours of Huaqing Fluid Technology Co., Ltd. are: 8: 30 am to 6: 00 pm from Monday to Friday, and rest on Saturday and Sunday. Rest for two hours. Jiangsu Huaqing Fluid Technology Co., Ltd. was established in 1993, mainly engaged in the research, development, production and sales of mechanical seals and auxiliary systems and marine stern shaft seals. Director of China Hydraulic and Pneumatic Seals Industry Association, first-class supplier in China petrochemical market, member of sealing professional committee of Fluid Branch of China Mechanical Engineering Society, member of National Mechanical Seal Standardization Committee, member of Suzhou Military Industry Association, and president of the first sealing chamber of commerce in Zhangjiagang. The registered trademark of this product was rated as a famous trademark in Jiangsu Province. Huaqing was rated as a well-known brand of Suzhou enterprises. The company obtained the first batch of production licenses issued by AQSIQ.