主营产品：Production and sales of capacitors and materials, quartz crystal components and materials; plastic products, aviation supplies, copper products, computers, software, digital media, building materials, office supplies, agricultural products, textiles and clothing, leather, labor protection supplies, electronic products, chemical products Sales of (except dangerous goods), electrical and electrical products, and mineral products; sales and installation of communication equipment and general machinery and equipment; self-operated and agency import and export business of various commodities and technologies (except for commodities and technologies that are prohibited or restricted by the state).
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6B thickness polypro
