SDMEC deals in the export and import businesses in the following fields: general-purpose and mining machinery, metal-cutting machinery, transportation and power machinery, bearings, steel balls and general-purpose products , pneumatic and hydraulic components, agriculture machinery , textile machinery , agricultural products - processing machinery, electrical engineering equipment, instruments and meters, electronic products , various hardware and tools , abrasives and grinding tools, casting and forging parts, various complete plants and technologies, as well as barter trade and frontier trade. Meanwhile, it also deals in processing according to supplied drawings or samples, and processing with supplied materials, assembling with supplied parts, compensation trade, acting as agents and selling goods on a commission basis, as well as flexible trade of setting up joint ventures, domestic and international bids, supplying technical labor to foreign countries, ect.