1. Engineering mechanics atanga a lan dan chuan force point tin hi uniform siam rawh .
2. Gusset plate hi high-Quality ABS engineering plastic a siam a ni a, a nghet hle bawk
3. Bracket design hian trigonometry principle a pawm a, a stability pawh a tha hle .
4, stress point tin hi a inang tlang hle a, a chhe thei lo hle bawk .
5. Fabric hian Oxford puan pahnih a hmang a, chu chu wear-resistant, anti{{2}aging, anti-tearing leh waterproof a ni.
