... coating : 30-50u as your demands • Standards: ASTM, BS, GB, DIN, JIS • Color: silver white • Applicable for greenhouse, building ... • Wall thickness: 0.5 to 2.5mm • Materials: Q 195/215/235 • Zinc coating : 40-50u • Standards: ... ASTM,BS, GB • Color: silver white • Applicable for greenhouse, building, fences ... (at)gmail(dot)com I.C.Q:677631155 Q..Q:137950903