Guangzhou construction of environmental technology co. Ltd. Is a sales company under the banner of guangdong green island air systems inc., which runs a product promotion for the sale of green island wind brands, supplies, settlements, after-sale services, etc. Guangdong green air systems inc. (stock code: 301043) has a long history of design development, production and marketing of indoor ventilation system products, working on the programme to improve indoor air quality and energy efficiency in buildings