HTS Number	Description	Unit of Quantity	General Rate of Duty	Details
2804 1000.00	Hydrogen	thousand m3	3.7%	More
2804 2100.00	Argon	thousand m3	3.7%	More
2804 2900.10	Helium	thousand m3		More
2804 2900.20	Neon	thousand m3		More
2804 2900.30	Isotopically pure rare gases having a purity of 99 percent or more by volume	thousand m3		More
2804 2900.50	Other	thousand m<sup>3<\/sup>	3.7%	More
2804 2900.55	Other	thousand m3		More
2804 3000.00	Nitrogen	thousand m3	3.7%	More
2804 4000.00	Oxygen	thousand m3	3.7%	More
2804 5000.10	Boron	kg		More
2804 5000.20	Tellurium	kg		More
2804 6100.00	Containing by weight not less than 99.99 percent of silicon	kg	Free	More
2804 6910.00	Containing by weight less than 99.99 percent but not less than 99 percent of silicon	kg/ Si kg	5.3%	More
2804 6950.00	Other	kg/ Si kg	5.5%	More
2804 7000.00	Phosphorus	kg	Free	More
2804 8000.00	Arsenic	kg	Free	More
2804 9000.00	Selenium	kg	Free	More