We are one of the professional exporters in supplying dual protective welding glasses applied to electric welding. The technical performance of the products is in conformity with American national standard Z87. 1-1989 and EN166/169. We are able to supply hardened and edged welding lenses with all shade # (3-14), and sizes are as follows:1) 105 x 50 x 3mm / 108 x 50 x 3mm 2) 110 x 50 x 3mm / 110 x 90 x 3mm 3) 98 x 75 x 3mm / 133 x 114 x 3mm 4) 50mm round lenses producing area:China payment:T/T in advance, L/C at sight supplying capacity:50,000,000pcs/month