Fused Silica Glass Tubes for Semiconductor Processing from Japan
Unworked fused silica tubes designed for high-purity environments in semiconductor diffusion furnaces and wafer processing. HTS 7002.39.00 includes these as other unworked tubes, leveraging the chapter definition of fused quartz as glass. Critical for thermal stability in chip manufacturing.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Provide SEMI-standard purity specs (e.g
• OH content) to validate classification and tariff treatment
• Ship in cleanroom packaging but note it's protective, not a worked coating per chapter notes