Erformance characteristics "tongjia" series of plastic injection molding machine is the essence of international trade. The injection digestion and absorption of developed by combining national standard model. Has the advanced and efficient, low noise, low energy consumption, suitable for production advantages, such as high precision thermoplastic, widely used in industry, electronic industry, automobile, civil, etc. (1) injection unit 1>optimized design of screw meticulously, material plastication adaptability, good performance, high efficiency. 2> the screw, the unique structure, material plastication. 3>using low torque hydraulic motor driven directly melt screw, and can realize stepless speed. 4>with salivate function, can prevent low viscosity plastic flow. Five, the cylinder block move in the direction of the light and its overall piston, unique structure, not kiln. (2) clamping unit 1>choose the optimal design with 5 fulcrum inclined hyperbolic latch mechanism, which have the function: high force and running balance, rapid. 2>draw bar's surface is processed by chromeplating, so that it can anti-abrasion, anti-wear. 3>central lubrication system is adopted grease automatic lubricate, and no lube oil will flow 4>big gear wheel is driven by hydraulic motor, so the adjustment will be quick and steady. 5>adopting hydraulic ejector unit, and it also has function of once or many times ejector. 6>it has sensitive and reliable mechanism and electric-protect safe unit. (3)controlling unit 1>movement of the whole machine is controlled by hydraulic pressure. It has the features of energy-saving, stability and low-noise. 2>adjustment system adopts electronic ruler high precision controlling. It ensures that each movement is correct, and it gives powerful support to production of all kinds of precision products. 3>main electrical components are well-known brand. It ensures that the machine can work steady during the production.