尼日利亚采购需求：包覆机、捻线机、卷绕机、接经机、提花针织机、针织织机

We're interested in getting a quotation for two specific materials. The first is a flat gasket made from ceramic paper, with a 30mm outer diameter and a thickness of 5mm, required for the enclosure panel in a turbo generator package. We need 10 pieces. The second item is a hexagonal head bolt, 1/4 inch diameter, with a thread length of 24mm and heat treatment at 28, needed for flange hardware on a gas generator's rear frame. We require 4 pieces. Please include freight costs, delivery timeframes, and payment terms in your response.