Since 2019. We started do PP post sign fpr our USA customer.

We have do many different printing  type:silk screen.CMYK printing. ink printing

In our experience. Usually the pp corrugated yard sign thickness 4mm and 5mm most popular. 3mm H stake was not easy to buy. 

So usually we recommand customer buy pp coflute sheet sign with 4mm thickness and 5mm thickness.

When we do packing. Usually we do carton box packing with a paper devider in center to avoid the H metal stake hurts the pp corrugated sheet.

If customer have own shipping agent. We will do with FOB terms. Sometimes we also arrange shipping for customer.