Steel Structure, Hvac Series, hvacsteelstructure.com

wansan group is engaged in producing and exporting excellent products to domestic and all over the world. wansan hold shanghai e-heng import & export, shanghai yoboo industries, shanghai sheng road steel structure ,henan keri technology four subsidiary company. as an expert company, we specializes in the research, design, manufacture, installation and after-sale service of the steel structure ,ventilation equipment, steel building etc. and at the same time ,our products expands into other lines like hvac systems& parts, printing consumables, house furnishings etc. brand wansan is a domestic registered trademark, since our company establishment, we attentively focus on the development, research, manufacture and installation in the field of accessory products related to steel structure plants and other related products. currently, we possess an outstanding r&d; management team and import advanced production facilities and inspection instrument from germany and australia, which facilitate