Say where the panels go
RV roof, tiled house roof or ground pole: the install location decides the bracket. Frame size and panel weight pick the model; the market picks the surface treatment.
Send a complete RFQ
Six points let a factory quote in one pass: dimensions, material (ABS or aluminium), surface treatment, packaging, certification needs and delivery date.
Plan for the fifth order, not the first
Agree up front on sample approval, production lead time (ours runs about 35 days) and who your contact person is. The first quote matters less than whether the fifth order arrives identical to the first.