1- Balls division, SHANDONG CHENGLI METAL CO., LTD,which a professional manufacturer of precison balls.Our products grade from G5 to G2000, Size from 0.1mm to 200mm. The precision balls as following:1.Carbon Steel Balls: AISI1010 AISI1015, AISI10852.Chrome Steel Balls: AISI521003.Stainless Steel Balls: AISI304,AISI316, AISI420, AISI4404.Ceramic Balls: Si3N4, ZrO2, Al2O3, SiC5.Plastic balls: PP, PC, PA, PTFE, PEEK, TORLON etc6.Rubber balls: NBR, NR, Viton, Silicon Rubber balls, HDPE etc.2- Steel Division, we also a professional trading with Cold rolled steel, Galvanized steel, Galvalume steel, Pre-painted steel and Tinplate sheets/ coils, we also doing deep processing for these products, e.g. corrugated steel sheets , Pre-painted roofing sheet, slit coils to strips and so on. We started our business since 2015, today we have established our products sales network of Galvanized, Galvalume and Pre-painted roofing sheet & steel sheet with more than 40 countries.