Gansu golden sunshine trade limited liability company   

Gansu Golden Sunshine Trade Co., Ltd. is a collection research and development, production, marketing as one of the large-scale comprehensive enterprise, founded in 2001, with the sun people born with stubborn and persistent, after many vicissitudes of life, a road stride forward singing militant songs, to grow rapidly in the boundless sea. "We come from the rough, we glory"! Over the years, the sun people toil and sweat, honesty and friendship created the sun this land, difficult journey every step, every bit of harvest, wrote the sun today good page. From scratch, from weak to strong sunlight, with intelligence and sweat to create change yesterday, today, is shouldering the heavy responsibility to challenge tomorrow... At the beginning of 2006, with the sun giant "pressure is not broken" covers the successful listing, a new wave of the tide again, enterprise under a vitality, people inspired, morale the sun, each person's face are filled with pride and joy to hide, also injected more strong vitality for the enterprise. In the face of market economy brings new opportunity and challenge, the sun together enter sounded the bugle... Today we have strong overall strength and extraordinary charm of enterprise, this is also the power of our company in the future development of the place. Passion and fighting with the coexistence, hope and faith, let us work together to meet tomorrow, more brilliant sunshine! Review the hardships and setbacks as we go along, each sun would issue a heartfelt sigh! The reality is not slow, forward -- is our only option......

The manhole cover is used to cover the road or home defense in deep well, used to prevent people or things fall. Generally divided into round and square, in the city's highways, usually circular, since the circular manhole cover is not easy to incline, can better protect the pedestrian and vehicle safety. Use the circular, the main consideration to the circular covers through each of its center of length to diameter is the same, so if the manhole cover is passing vehicles rolled up, because no matter how rolling, its diameter than the following Iguchi Hiro, does not fall to the wellhead to cover. And if the square, because the square diagonal significantly longer than the length of each, such covers were rolled up, it is easy to fall into the wells along the diagonal direction of the wellhead, causing potential safety problems. If the wellhead made into round or significantly less than the manhole cover, will not fall into the wells covers square. Here involves to the maximum utilization and conservation of a material problem. Wellhead depends on the size of the wellhead, if square manhole cover must install above area is far greater than the mouth of the well, then the material utilization and the practical value of nature is not directly using the circular covers more effective, not only saving the manhole cover material, also ensures the safety of wellhead. While in the country and cable well use, general use square, so you can better prevent rainwater ingress of liquid.