Beijing Chaoyang ventilation duct exhaust pipe exhaust ventilation engineering works, Changping Tiantongyuan kitchen exhaust hood production processing installation of kitchen flue cleaning, ventilation ducts custom installation business areas: design, manufacture, installation of large, medium and small ventilation engineering. Ventilation ducts, air conditioning ducts, welding smoke dust, noise removal, pipe insulation, fume purification, environmental engineering. The company specializes in the production and processing through to manufacture white metal pipes, stainless steel pipes hoods, ventilation pipe installation of various designs, smoke pipe plumbing equipment ventilation systems engineering contracting. Services: one, the company undertaking the ventilation duct engineering design, production, installation and alteration (including noise) project; two, restaurants, canteens Houchu smoke projects: large and small fume hood design and installation; three, all kinds of central air conditioning, new wind units, fan coil units, household air-conditioning equipment installation and maintenance; four, fabrication and installation of air conditioning and ventilation duct works, indoor ventilation, fresh air pipes, all kinds of smoke, exhaust pipes; the company introduced advanced automatic feed duct production lines, shears, flange forming machine, beading machine, bending machine, locking machine, rounded machine, spot welding, more than ten typhoons tube processing equipment, professional undertaking: ventilation equipment to (galvanized, stainless steel, composite duct, FRP) material produced for a total of flange duct, angle iron flange duct, damper, muffler, HIP me; undertake plumbing insulation and ventilation pipe surface insulation works; specializing in the production of central air-conditioning system piping, Fire exhaust pipes, kitchen exhaust pipes, factory, workshop ventilation and cooling design and production installation and commissioning.