求翻译：双良节能系统股份有限公司是江苏双良集团有限公司的控股子公司，2003年4月22日，公司在上海证券交易所成功上市交易，证券代码为600481。该公司是中国中央空调行业的领导企业之一，主要产品有溴化锂吸收式制冷机（蒸汽型、直燃型、热水型）、吸收式热泵等中央空调主机及末端产品。是什么意思？

Shuangliang energy saving systems, Inc. is a holding subsidiary of Jiangsu Shuangliang Group Co., Ltd., April 22, 2003, the Company successfully listed on the Shanghai Stock Exchange trading, securities code 600 481. The company is one of the leading companies of central air-conditioning industry in

Double-good energy-efficient systems Ltd. , Jiangsu shuangliang Group Co. , Ltd, the holding subsidiaries April 22, 2003, the company successfully listed on the Shanghai Stock Exchange trading, the Securities Code for 600,481 . The company is the Chinese central air-conditioning one of the leading c

The double good energy conservation system limited liability company is the Jiangsu double good group limited company's holding subsidiary company, on April 22, 2003, the company in the Shanghai stock market success going on the market transaction, the negotiable securities code was 600481.This comp

Double good energy-saving systems AB is a subsidiary company of Jiangsu shuangliang group limited, April 22, 2003, the company was listed on the Shanghai stock exchange transactions, stock code is 600,481. The company is one of the leading enterprises of the central air conditioning industry, main p