Welcome to visit our company! Our company Qingdao Sinostro Technology Co., Ltd (Qingdao Histro Steel Tower Co., Ltd) mainly produce all kinds of steel towers and steel structure, including electric transmission towers, telecommunication towers, radio towers, etc. Electric transmission tower is one of our main products.

Our company is situated in Beiguan Industrial Park in Jiaozhou, Qingdao,  with the area of 120,000 square meters and the staff of more than 800, including 116 middle and superior technical professors. Our company is a comprehensive tower enterprise, always committed to the development and application of steel technology, specializing in the design, production and initialization of structural mast and steel structure.

Possessing modern CNC machining line, advance inspection equipment and perfect quality management system, our company forms the productive capacity of 100,000 tons of tower and steel structure. Previous planning, construction observation and produce acceptance are all conformed to international standards. The product has been widely applied in telecommunication, mobile, railway, electricity, transformation and broadcasting. Our business has spreaded more than 30 districts in China and other countries including Thailand, Chile, Span, Pakistan, Myanmar, Sri Lanka, Liberia, Tanzania, Australia, Luxembourg, Norway, Russia, etc.

Business license

Since established in 2001, our factory has gotten all kinds of certificates, including  ISO9001, ISO14001, OHSAS Certificates and CE Certificate.

If you are interested in our steel towers, please don't hesitate to contact with us, we look forward to set long cooperation with you.

The following are some of our photos:

1. Loading test of 1000KV electric transmission tower:

2.Our certificates:

3. Our finished Transmission Tower: 

4. Our Packing of angle steel:

5. Our packing of connecting plates and fittings: