The sucker rod centralizers, couplings, polished rods, sucker rod pup joints, tubing crossovers and other products ordered by South American customers are delivered to Tianjin Port this week to customers after 30 days of production, inspection and packaging. The sucker rod centralizers in this batch of order, using the material of nylon 66, have the characteristics of wear resistance, high temperature resistance, corrosion resistance, and play a significant role in reducing the wear of the sucker rod. Our products have always been accepted by our customers, and the number of customers ordered increases year by year.