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Casein Shirt Buttons from China

Small, durable buttons made from casein, a milk-derived protein plastic, used for fastening shirts and blouses. They fall under HTS 9606.21.20.00 as buttons specifically of casein, which is explicitly listed in the subheading for plastic buttons not covered with textile material. These buttons provide a natural, pearl-like appearance ideal for apparel.

Duty Rate — China → United States

37.5%

Rate breakdown

9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)

Import Tips

• Verify casein composition via lab testing or supplier certification to confirm classification under 9606.21.20.00, as other plastics fall elsewhere

• Label products clearly with material content to comply with textile and consumer product regulations during customs clearance

• Avoid common pitfalls like misdeclaring as synthetic plastic buttons, which could shift to 9606.21.40.00 and alter duties