... , Europe, Middle east etc. Because of good quality and good service , we get good feedbacks in the world.1) Company introduction ... 300000 sqm per annum. Enterprise cultureGet to know myself to constantly correct myself;Get to know others to learn from others, and point out ... bolts,nuts, plates, washers ,flange, tension rod ,crane etc. 4) How to order Design Parameters 1) Live load on roof (KN/M2 ...