Beijing TDR Environ-Tech. Co. Ltd. is a high-tech enterprise engaged in MSW leachate treatment engineering, which has made outstanding achievement in domestic leachate treatment field.
北京天地人环保科技有限公司是专门从事垃圾渗滤液处理的高科技环保公司，在国内垃圾渗滤液处理上业绩卓著。
Beijing Livesky technologies CO., LTD. Beijing Livesky technologies CO., LTD. is an outstanding enterprise specializing in streaming and networking technologies.
北京经天科技有限公司是研究和开发安全流媒体传输系统的高科技软件开发公司。
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