Shenzhen Bao'an District Guangdong No.7 Refrigeration Equipment No.11 Central Air Conditioning No.16 Aircraft No.17 Min Hang No.17 Pneumatics Technology No.21 Refrigeration No.28 Refrigeration Engineering No.35 Equipment Products Equipment Parts No.50 Frequency Conversion Technology No.80 HVAC Air Conditioning Systems Engineering 高新技术企业 科技型中小企业 省高新技术产品 省级高新技术企业 市级高新技术企业 市科技型中小企业