Profile: Zhejiang Tiansn Elec. Co., Ltd. specializes in printing circuit boards. Our product line includes single-phase series, three-phase series, coded pre series, IC card series and pre-payment system. Our model DDS707 single-phase electronic-type electric energy meter is made with the advanced extra-low power consumption solid integrating and used to gauge the AC active electric energy of a rated frequency 50Hz. We produce various circuit boards such as tin-spray, gild and golden fingers. Our brand name is Tiansn. We carry on bonding circuit boards, jointing chips and wave crest. We are accredited with ISO 9002 certification.