The biggest advantage of the blow molding machine is energy saving. Adopting high pressure clamping, JND automatic stretch blow molding machine makes self-adjustment in accordance with the different pressure needed during production, thus ensuring the super clamping force. While the high pressure sealing system with automatic adjustment permits that mold sealing is under condition of 100% air tightness before blowing, and avoid air energy loss owing to incomplete air tightness. With such effective control over air energy and power, lower costs and improved efficiency are achieved. 1.Safe, reliable, and unique design of the position of valve to make the air pressure diagram of the machine easier to understand. 2.Low cost, high efficiency, easy operation, easy maintenance, etc, with automatic technological process. 3.Contamination is avoided for the bottle body. 4.Ideal effect of the chilling with the chilling system. 5.Easy installation and starting 6.Low rejection rate: less than 0.2 percent.