The total weight of the whole set plastic toilet seat is 650 gm, made by PP. The two plastic injection moulds of main body are made 1 cavity with one tip hot runner. As for the rest of the components we apply cold runner and 4 cavities. Seven moulds plus a 125 and 350 ton plastic injection machine is sufficient to manufacture a plastic toilet seat, which is really a good investment while the toilet seat is so high demand on markets.