Manufacturing, processing, and sales of marine propellers, marine propeller blades, marine deck machinery, marine special equipment, marine supporting equipment parts, recreational ships, and CNC metal cutting machine tools; sales of electronic products, communication equipment, wood products, plastic products, metal products, auto parts, motorcycle accessories, knitwear, textiles, boxes, bags, trinkets, toys, lamps, shoes, and hats; import and export of goods, and import and export of technology.