新加坡采购需求：因科乃尔合金、哈氏合金、Inconel 718、Invar 36、Haynes 188、蒙乃尔合金

We are in need of Kovar or Ni42 strips with specific dimensions: 0.4mm width, 2.2mm length, and a thickness ranging from 0.05mm to 0.2mm. Ideally, we prefer a roughness between Rz 1.6 to 6µm. Could you confirm if you can provide these rectangular pieces? Also, we'd like to know the dimensional tolerances you can achieve and whether you have samples or small quantities available for trial.