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Electronic product development, production and sales, the LED light emitting diode, diode module, LED lamp series, power supply, circuit board, digital products, household appliances production and sales, chemical products (excluding hazardous chemicals and countries prohibit or restrict the operation of the chemical products), rubber products, plastic products, electrical and building materials sales. Goods and technology import and export (excluding monopoly of goods), warehousing services (excluding hazardous chemicals and special provisions of the state project).