Lishui Coil staircase | Coil stair treads feature a height generally between 16 cm to 23 cm. 2 In addition to the vertical fence, the fence can also be arranged in stair levels. However, considering the safety of the best arranged vertically from the center. 3 fence not more than two 12.5 cm, otherwise the child's head is easy to extend to cause danger. 4 mounted the stairs and no damage the wall. 5 floor access hole opening is square. 6 good quality of each stair stepping up to 2000 kg load. Be sure to buy a stair businesses issued by the national quality supervision department issued a test report, there is no test report can not be free to buy. Bearing little pressure to be careful to buy Bazhou Kang Xian Zhuang Tian Hardware Factory Website:. Www.htlouti.com Contact: Jiang Baiqing Phone: 13513265724 landline: 0316- 7991298 QQ: 425 807008 E-mail: 425807008@qq.com Address: Bazhou Kang Xian Zhuang Industrial Park Yashima Network finishing release factory specializing in the production of steel and wood staircase.