[Code of Federal Regulations]
[Title 19, Volume 1]
[Revised as of April 1, 2005]
From the U.S. Government Printing Office via GPO Access
[CITE: 19CFR10.16]

[Page 97-99]
 
                        TITLE 19--CUSTOMS DUTIES
 
   CHAPTER I--BUREAU OF CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF 
              HOMELAND SECURITY; DEPARTMENT OF THE TREASURY
 
PART 10_ARTICLES CONDITIONALLY FREE, SUBJECT TO A REDUCED RATE, ETC.
--Table of Contents
 
                      Subpart A_General Provisions
 
Sec. 10.16  Assembly abroad.

    (a) Assembly operations. The assembly operations performed abroad 
may consist of any method used to join or fit together solid components, 
such as welding, soldering, riveting, force fitting, gluing, laminating, 
sewing, or the use of fasteners, and may be preceded, accompanied, or 
followed by operations incidental to the assembly as illustrated in 
paragraph (b) of this section. The mixing or combining of liquids, 
gases, chemicals, food ingredients, and amorphous solids with each other 
or with solid components is not regarded as an assembly.

    Example 1. A television yoke is assembled abroad from American-made 
magnet wire. In the foreign assembly plant the wire is despooled and 
wound into a coil, the wire cut from the spool, and the coil united with 
other components, including a terminal panel and housing which are also 
American-made. The completed article upon importation would be subject 
to the ad valorem rate of duty applicable to television parts upon the 
value of the yoke less the cost or value of the American-made wire, 
terminal panel and housing, assembled therein. The winding and cutting 
of the wire are either assembly steps or steps incidental to assembly.
    Example 2. An aluminum electrolytic capacitor is assembled abroad 
from American-made aluminum foil, paper, tape, and Mylar film. In the 
foreign assembly plant the aluminum foil is trimmed to the desired 
width, cut to the desired length, interleaved with paper, which may or 
may not be cut to length or despooled from a continuous length, and 
rolled into a cylinder wherein the foil and paper are cut and a section 
of sealing tape fastened to the surface to prevent these components from 
unwinding. Wire or other electric connectors are bonded at appropriate 
intervals to the aluminum foil of the cylinder which is then inserted 
into a metal can, and the ends closed with a protective washer. As 
imported, the capacitor is subject to the ad valorem rate of duty 
applicable to capacitors upon the value less the cost or value of the 
American-made foil, paper, tape, and Mylar film. The operations 
performed on these components are all either assembly steps or steps 
incidental to assembly.
    Example 3. The manufacture abroad of cloth on a loom using thread or 
yarn exported from the United States on spools, cops, or pirns is not 
considered an assembly but a weaving operation, and the thread or yarn 
does not qualify for the exemption. However, American-made thread used 
to sew buttons or garment components is qualified for the exemption 
because it is used in an operation involving the assembly of solid 
components.

    (b) Operations incidental to the assembly process. Operations 
incidental to the assembly process whether performed before, during, or 
after assembly, do not constitute further fabrication, and shall not 
preclude the application of the exemption. The following are examples of 
operations which are incidental to the assembly process:
    (1) Cleaning;

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    (2) Removal of rust, grease, paint, or other preservative coating;
    (3) Application of preservative paint or coating, including 
preservative metallic coating, lubricants, or protective encapsulation;
    (4) Trimming, filing, or cutting off of small amounts of excess 
materials;
    (5) Adjustments in the shape or form of a component to the extent 
required by the assembly being performed abroad;
    (6) Cutting to length of wire, thread, tape, foil, and similar 
products exported in continuous length; separation by cutting of 
finished components, such as prestamped integrated circuit lead frames 
exported in multiple unit strips; and
    (7) Final calibration, testing, marking, sorting, pressing, and 
folding of assembled articles.
    (c) Operations not incidental to the assembly process. Any 
significant process, operation, or treatment other than assembly whose 
primary purpose is the fabrication, completion, physical or chemical 
improvement of a component, or which is not related to the assembly 
process, whether or not it effects a substantial transformation of the 
article, shall not be regarded as incidental to the assembly and shall 
preclude the application of the exemption to such article. The following 
are examples of operations not considered incidental to the assembly as 
provided under subheading 9802.00.80, Harmonized Tariff Schedule of the 
United States (19 U.S.C. 1202):
    (1) Melting of exported ingots and pouring of the metal into molds 
to produce cast metal parts;
    (2) Cutting of garment parts according to pattern from exported 
material;
    (3) Painting primarily intended to enhance the appearance of an 
article or to impart distinctive features or characteristics;
    (4) Chemical treatment of components or assembled articles to impart 
new characteristics, such as showerproofing, permapressing, sanforizing, 
dying or bleaching of textiles;
    (5) Machining, polishing, burnishing, peening, plating (other than 
plating incidental to the assembly), embossing, pressing, stamping, 
extruding, drawing, annealing, tempering, case hardening, and any other 
operation, treatment or process which imparts significant new 
characteristics or qualities to the article affected.
    (d) Joining of American-made and foreign-made components. An 
assembly operation may involve the use of American-made components and 
foreign-made components. The various requirements for establishing 
entitlement to the exemption apply only to the American-made components 
of the assembly.

    Example. Diodes are assembled abroad from American-made components. 
The process includes the encapsulation of the assembled components in a 
plastic shell. The plastic used for the encapsulation is in the form of 
a pellet, and is of foreign origin. After the prefabricated diode 
components are assembled, the assembled unit is placed in a transfer 
molding machine, where, by use of the pellet, molten epoxy is caused to 
flow around the perimeters of the assembled components, forming upon 
solidification a plastic body for the diode. Upon importation, exemption 
may be granted for the value of the American-made components, but not 
for the value of the plastic pellet. If the plastic pellet used for 
encapsulation was of United States origin, its value would still be a 
part of the dutiable value of the diode, because the plastic pellet is 
not a fabricated component of a type designed to be fitted together by 
assembly, but merely a premeasured quantity of material which was 
applied to the assembled unit by a process not constituting an assembly.

    (e) Subassembly. An assembly operation may involve the joining or 
fitting of American-made components into a part or subassembly of an 
article, followed by the installation of the part or subassembly into 
the complete article.

    Example. Rolls of foil and rolls of paper are exported and cut to 
specific length abroad and interleaved and rolled to form the electrodes 
and dielectric of a capacitor. Following this procedure, the rolls are 
assembled with cans and other parts to form a complete capacitor. The 
foil and paper are entitled to the exemption.

    (f) Packing. The packing abroad of merchandise into containers does 
not in itself qualify either the containers or their contents for the 
exemption. However, assembled articles which otherwise qualify for the 
exemption and which are packaged abroad following their assembly will 
not be disqualified

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from the exemption by reason of their having been so packaged, whether 
for retail sale or for bulk shipment. The tariff status of the packing 
materials or containers will be determined in accordance with General 
Rule of Interpretation 5, HTSUS (19 U.S.C. 1202).

[T.D. 75-230, 40 FR 43023, Sept. 18, 1975, as amended by T.D. 89-1, 53 
FR 51248, Dec. 21, 1988]