主营：Manufacturing pipes, steel pipes, pipeline plant chemical series products, grinding resistance, pyrotechnic pyrotechnics, pyrotechnics and accessories, mechanical equipment, transport equipment, pressure containers, sale of pipe and piping components, ste
主营：Electronic devices, electronics, technology development and sale of photovoltaic products, instrumentation, electronics interfaces for communications, wires, sale of computer accessories, semiconductors, design and sale of integrated circuits, development
主营：Instrumentation instruments, mechanical accessories, hardware hardware, hardware hardware, electronics, technological development of audio and video products, design and sale, computer hardware for door-to-door maintenance of machinery, electronics, audio
主营：Manufacturing and installation of steel structures, plastic steel doors and windows, processing, sales, and installation of color coated panels and color steel molding equipment, manufacturing and sales of color steel movable houses, retail and wholesale
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