Single section shoot, double section shoot, double section shoot, flat shoot, flat shoot, positioning column, plastic mold guide sleeve, straight sleeve, middle column sleeve, plastic mold guide sleeve, straight sleeve, middle support sleeve, positioning column, square auxiliary device, three-dimensional positioning block group guide auxiliary device, A, B, C type nozzle, fixed ring A, B type, standard mechanical switch, square auxiliary device, small water outlet standard special injection port liner, large water outlet standard special injection port liner Mold date indicating device, resin switch, water stop plug, finished tip for plastic mold, pen core, pen tube, small pull rod C-type, slant support tip, pull material tip, plastic mold guide post, pull rod, return pin, spring, ejector pin, barrel, garbage nail, etc.