主营：General projects, promotion services for new material technology, research and development of new material technology, sales of office supplies, sales of fireproof sealing materials, sales of green composite materials for rail transit, sales of engineerin
主营：General projects, sales of instruments and meters, sales of intelligent instruments and meters, retail of hardware products, wholesale of hardware products, sales of mechanical equipment, rental of mechanical equipment, repair of instruments and meters, s
主营：Research and development, production, sales, instrument and equipment, mechanical equipment, experimental equipment and automatic detection equipment, automated intelligent mechanical equipment, computer software, mechanical parts, import and export of go
主营：Research and development, sales, maintenance, and technical services in the fields of instrumentation, industrial automation equipment, computers, software and auxiliary equipment, hardware and electrical equipment, mechanical and electrical equipment, of
主营：Research and sales of thermal conductive materials, conductive materials, absorbing materials, shielding materials, new nanocomposites, and metamaterials, industrial design, domestic trade, import and export of goods and technologies. Production of therma
主营：General projects, sales of experimental and analytical instruments, sales of instruments and meters, medical research and experimental development, sales of glassware, technical services, technical development, technical consultation, technical exchange,
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