Qingdao Yi Gao Air Conditioning Co., Ltd. is a high-tech private enterprise specializing in the R&D, manufacture, sale and maintenance of evaporative air coolers. With joint efforts of all staff members, our company imported advanced design and manufacture techniques from Canada. Now we produce "Hailan" Evaporative Air Coolers with disposable molded plastic shells, which are solid and durable. Our products completely solve the past problems of corrosion and aging, and the life of our products extends to 20 years. Our products can work stably and efficiently in a variety of...