Detailed Product Description Our products that mainly used in the medical instrument, optical instrument, metallurgy, finance, photographic equipments, aviation, aerospace, instrument and meters, military as well as scientific research. Technical Indexes Class Of BubbleStripeStressType Thickness(mm)λtj(nm) λ0(nm)Tλ0(%)KJB4002400±10560≥86.0≥0.6JB4202420±10560≥86.0≥0.6JB4502450±10560≥89.5≥0.6Type ...