APG technique is similar with thermoplastic injection machine. First mix resin, hardener, silicon powder and pigment by mixing plant(under vacuum), once the material finish mixing, give air pressure (2-3.5KG) to the mixing pots, so the material will be injected into mould, meanwhile, the air will release from mould when mould full filled material, material will be cured because mould is hot. The injection nozzle must continue inject material when curing  It is large and medium-sized equipment, dimension of clamping plate  is 1000*1200mm,length of upper and lower core-pulling stroke can be determined according to the product(it needs lower core-pulling foundation pit when the lower core pulling exceeds 300mm). It is mainly used for transformer, 12KV-1250A,3150A insulating cylinder, contact box, 40.5KV bushing, bending plate, upper and lower shell of SF6 insulating cover, etc.