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Commercial interchangeability; 19 U.S.C. 1313(j)(2); polyisobutylene

The tariff classification of a polyisobutylene polyethylene copolymer from France.

The tariff classification of Polyisobutylene (CAS Reg No.9003-29-6), in clay form, from Japan

HQ 956585 revoked; PURADD FD-100, previously known as Pluradyne FD-100

Application for Further Review of Protest 3901-08-101355; Duty Suspension of Polyisobutylene

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