Qingdao Histro Steel Tower Co., Ltd. is an enterprise established in 2001. Now we update the name to Qingdao Sinostro Technology Co., Ltd and Qingdao Histro Heavy Equipment Co., Ltd. Our company has the ability of fabricate and building broadcasting television towers, Telecommunication towers, Transmission towers, and structural steel for oil, gas, petrochemical, power generation, refinery, mining equipment, rail transport, and pressurevessel. Our output value was US$500 Million in 2012.

Our company is headquartered in Jiaozhou, Qingdao, Shandong Province, and has branches in Beijing, Inner Mongolia, Chongqing and Xinjiang. Our production base takes up an area of 130, 000 square meters with factory building of 30, 000 square meters. We have total assets of over US$ 50 million including circulating fund of US$20 million. There are 880 regular staff members in our company now, among whom 46 professional personnel have all kinds of economically professional titles including 8 senior engineers & 3 national first- class registered construction teachers.

Since our company was set up in Aug. 2001, we have built up more than 6000 broadcast communication towers with height between 50 and 280 meters in the whole country, as well as over 7000 power towers for transmission electricity. The indexes of the towers, such as vertical degree, reach or exceed the national standards. Also we fabricate more than ten thousands Ton structure steel per year for Australia coal mine, like as Cape Cambert, Wetern Turner Synline.

ISO9001 quality system and MBO can be applied. Security management consciousness must be heightened. A consistent total management with various systems would be formed to form a running-system which unites duty, power and benefit.

In order to take up the production capacity, our company invests US$10 million in equipment. There are 4 digital controlled angle production lines, 1 numerical bending machine, 2 automatic connecting-plate machines, 2 digital controlled flame cutters, 80 welding machines, all kinds of drill machines and punchers, a 1: 1 lofting platform, and other equipment in our company.

Since our company was established, an advanced lab has been set up. There are 15 professional staff members in the lab and the lab is equipped with universal testing machines, flaw detectors, elemental analyzers, and other equipment.

Our company had been awarded as 'the Enterprise Observes Contracts and Keeps Promise' by the Industrial and Commercial Bureau of Qingdao from 2001 to 2013 in succession.

Now Histro have get the CE CPD EN1090 Certification. Also have the ISO14001 Certification and Safety Certification.