Mold manufacturing; plastic product manufacturing; automotive decoration product manufacturing; rubber product manufacturing; electronic component manufacturing; transformer, rectifier, and inductor manufacturing; photovoltaic equipment and component manufacturing; mold sales; plastic product sales; automotive decoration product sales; rubber product sales; electronic component wholesale; photovoltaic equipment and component sales; auto parts research and development; mechanical equipment research and development; labor services (excluding labor dispatch); road freight transport of ordinary cargo vehicles with a total mass of 4.5 tons or less (excluding online freight and dangerous goods); goods import and export; technology import and export. Permitted items: Power generation, transmission, and distribution (power supply) business.