加拿大GDD Instrumentation www.gddinstrumentation.com
加拿大GDD Instrumentation.公司－－－－－－GDD产品从1976年建立以来，一直从事地球物理测量、采矿、勘探、钻探及环保领域仪器的生产、销售、租赁等业务。同时还负责新仪器的开发和研制工作。经过30多年来的不懈努力，再加之良好的售后服务，GDD公司的产品享誉全世界。
Since 1976, Instrumentation GDD Inc. has manufactured, sold, rented and
developed innovative, leading-edge rugged and reliable instruments for
geophysics and mining. GDD is well-known for its excellent customer service.

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Confirm the ease of use and reliability of GDD instruments
Upon special request, GDD has and can develop instrumentation based
on customer needs.