北京海蓝科技开发有限责任公司
Exhibit Profile：
professional hi-tech enterprise engaged specially in research & development, production and sales of oil-drilling and logging instruments
Exhibits show：
professional hi-tech enterprise engaged specially in research & development, production and sales of oil-drilling and logging instruments
Exhibits show：
Website：http://www.b--hl.com.cn / http://www.hailan.co