The registration address of fengkohua preservative temperature pipeline ltd., located in the bunwa district of the salt hill county economic development zone and registered as the salt hill district market supervisory authority and represented by the legal person liu zheng, includes sales of the spiral steel pipe, seamless steel pipe, straight steel pipe, thermal extended steel pipe, corrosive steel pipe, coating steel pipe, anticorture thermostat, anti-corrosion heating equipment, fittings and accessories, steel materials; anti-corrupt temperature works; import and export of goods** (project authorized by law and subject to the approval of the relevant department)