OST collaborated with China Railway Construction Corporation to obtain an utility model patent of "A Bridge-Tunnel-Integrated Soft Net Steel Shed Tunnel Structure" with patent No. ZL201220261468.2, and received commendation from China Railway Construction Corporation. The utility model is easy to be produced and installed, and integrated with bridges, which provides a good impact resistance ability, high strength, light weight and good-looking appearance. The utility model can also relatively separate the external environment with driving environment, so that the environment inside and outside will not influence each other.
Up to now, the utility model structure has been applied in several projects of China Railway Construction Corporation and receives prominent economic benefit.
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