35 Retail store services featuring the sale of industrial engines, open power units, and generators, and parts relating thereto; retail store services featuring the sale of custom engines and parts relating thereto; online retail store services featuring the sale of industrial engines, open power units, and generators, and parts relating thereto; online retail store services featuring the sale of custom engines and parts relating thereto; retail services through direct solicitation by distributors directed to end-users featuring the sale of industrial engines, open power units, and generators, and parts relating thereto; retail services through direct solicitation by distributors directed to end-users featuring the sale of custom engines and parts relating thereto; retail services through direct solicitation by salespersons directed to end-users featuring the sale of industrial engines, open power units, and generators, and parts relating thereto; retail services through direct solicitation by salespersons directed to end-users featuring the sale of custom engines and parts relating thereto