Enum GrayZone 

pub enum GrayZone {
    Chapter29vs38,
    Chapter28vs29,
    MixtureEssentialCharacterUnclear,
}

Identifies a classification boundary where misclassification risk is elevated.

When present in HsPrediction::gray_zone, consider requesting a formal advance ruling (事前教示 / binding tariff information) from customs authorities before making a customs declaration. Misclassification of chemicals can result in retroactive duty assessments going back up to five years.

Variants

Chapter29vs38

Chapter 29 (pure organic chemicals) vs Chapter 38 (prepared/mixed products).

Occurs when an organic compound is part of a formulation, has industrial use, or when purity / presentation may shift classification to Ch. 38. Multi-function additives and flame-retardant mixtures are common examples.

Chapter28vs29

Chapter 28 (inorganic chemicals) vs Chapter 29 (organic chemicals).

Occurs for organometallic compounds or borderline organic/inorganic cases where the presence of metal–carbon bonds determines the correct chapter.

MixtureEssentialCharacterUnclear

Mixture where essential character (GRI 3b) is ambiguous.

No single component exceeds 50 % w/w, so GRI 3c (last heading by number) was applied with low confidence. An expert or advance ruling is strongly recommended.

Trait Implementations

impl Clone for GrayZone

fn clone(&self) -> GrayZone

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for GrayZone

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for GrayZone

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for GrayZone

fn eq(&self, other: &GrayZone) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for GrayZone

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for GrayZone