This client need 2sets electric hoist for I-Beam. The communication between us is little difficult. They let Chinese Academy of Sciences design the whole steel structure, and order 2 sets hoist from us. Our engineer carefully calculate the I-beam size, and make adjustment of our hoist, lengthening the trolley cotter pin.
Therefore, if you need any products, please do keep contact with us, and our engineer will feedback you the suitable design.