Alto Refrigeration Manufacturing Co., Limited is a professional factory who concentrating on offering quality environmental control product. It is located in South China with a new production centre of 12,000m2, which owns one office building, two assembly lines, three profession testing rooms and an indoor swimming pool equipped with all products for long-standing test. Since its opening and years of hard work, Alto has achieved high growth and kept developing all kinds of environmental control products. For the coming 2010, Alto is ready to provide clients a full range of quality environmental control products, which including temperature control system, humidity control system, energy recovery ventilation system and some special environment control systems . All the products are strictly constructed to comply with the highest standards, all under the instructions of ISO 9001 and ha

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