HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
---|---|---|---|---|---|
9506910030 | Doc | 42.1% | CN | US | 2025-05-12 |
9507908000 | Doc | 39.0% | CN | US | 2025-05-12 |
9208900040 | Doc | 42.8% | CN | US | 2025-05-12 |
9208900080 | Doc | 42.8% | CN | US | 2025-05-12 |
3926903300 | Doc | 36.5% | CN | US | 2025-05-12 |
3923900080 | Doc | 58.0% | CN | US | 2025-05-12 |
3923500000 | Doc | 60.3% | CN | US | 2025-05-12 |
Dart Kit
Dart Kit refers to a comprehensive set of tools, libraries, and resources for developing software using the Dart programming language. It is primarily associated with building cross-platform applications, particularly those leveraging the Flutter framework, but can also be used for server-side development, web applications, and more.
Material
The core of a Dart Kit is the Dart SDK (Software Development Kit). This includes:
- Dart Language: The object-oriented, class-defined, garbage-collected programming language itself.
- Core Libraries: A standard set of libraries providing fundamental functionalities such as collections, asynchronous programming, input/output operations, and JSON processing.
- Virtual Machine (VM): The runtime environment that executes Dart code. Different VMs are available for different platforms (e.g., the Dart VM for desktop, the Dart AOT compiler for mobile).
- Compiler: Transforms Dart source code into machine code (AOT - Ahead-of-Time compilation) or bytecode for the VM.
- Package Manager (Pub): A tool for managing dependencies and reusable packages.
- Analyzers & Linters: Tools for static code analysis, helping identify potential errors and enforce coding standards.
Purpose
The primary purpose of a Dart Kit is to provide developers with everything needed to:
- Write efficient and maintainable code: Dart’s strong typing, rich standard library, and tooling support code quality.
- Build cross-platform applications: Flutter, built on Dart, allows developers to write code once and deploy to iOS, Android, web, desktop (Windows, macOS, Linux), and embedded devices.
- Rapid Development: Features like Hot Reload (Flutter) significantly speed up the development process.
- Server-side Applications: Dart can be used to build robust back-end systems and APIs.
Function
- Compilation & Execution: Translates Dart code into executable forms for target platforms.
- Dependency Management: Handles the inclusion and updating of external libraries and packages.
- Debugging & Profiling: Provides tools to identify and fix errors, and optimize application performance.
- Code Analysis: Helps ensure code quality and adherence to best practices.
- Testing: Supports unit testing, widget testing (Flutter), and integration testing.
Usage Scenarios
- Mobile Application Development (Flutter): The most prominent use case, creating native-like apps for iOS and Android.
- Web Application Development: Building Single-Page Applications (SPAs) and interactive web components.
- Desktop Application Development (Flutter): Creating cross-platform desktop apps.
- Server-side Programming: Developing REST APIs, microservices, and back-end systems.
- Embedded Systems: Developing applications for devices like Raspberry Pi.
- Command-Line Tools: Creating scripts and utilities.
Common Types/Components
- Flutter SDK: The framework for building user interfaces. Includes widgets, rendering engine, animation tools, and platform integration.
- DartPad: An online Dart editor and playground for experimenting with Dart code.
- Pub Packages: A vast ecosystem of reusable libraries and tools available through the Pub package manager. Examples include:
http
: For making HTTP requests.dio
: Another popular HTTP client.provider
: For state management in Flutter.sqflite
: For local database storage in Flutter.path_provider
: For accessing platform-specific file paths.
- IDE Support: Integrated development environments (IDEs) like Visual Studio Code, Android Studio, and IntelliJ IDEA offer extensive Dart and Flutter support (code completion, debugging, refactoring).
- Command-Line Tools (Dart CLI):
dart
,pub
,flutter
– tools for running, building, and managing Dart projects.
Based on the provided information, “dart kit” can be classified under the following HS codes:
- 9506.91.00.30: This HS code covers Articles and equipment for general physical exercise, gymnastics, athletics, other sports (including table-tennis) or outdoor games, not specified or included elsewhere in this chapter; swimming pools and wading pools; parts and accessories thereof: Other: Articles and equipment for general physical exercise, gymnastics or athletics; parts and accessories thereof Other. This includes equipment used for sports and outdoor games, which a dart kit would fall under. The tax detail indicates a base tariff of 4.6%, a surcharge of 7.5%, and a surcharge of 30.0% after April 2, 2025, with a total tax rate of 42.1%.
- 9208.90.00.40: This HS code covers Music boxes, fairground organs, mechanical street organs, mechanical singing birds, musical saws and other musical instruments not falling within any other heading of this chapter; decoy calls of all kinds; whistles, call horns and other mouth-blown sound signaling instruments: Other Musical instruments. If the dart kit is considered a musical instrument (e.g., if it has sound-producing features beyond the basic game), this code may apply. The tax detail indicates a base tariff of 5.3%, a surcharge of 7.5%, and a surcharge of 30.0% after April 2, 2025, with a total tax rate of 42.8%.
- 9208.90.00.80: This HS code covers Music boxes, fairground organs, mechanical street organs, mechanical singing birds, musical saws and other musical instruments not falling within any other heading of this chapter; decoy calls of all kinds; whistles, call horns and other mouth-blown sound signaling instruments: Other Other. Similar to 9208.90.00.40, this applies if the dart kit is considered a musical instrument. The tax detail indicates a base tariff of 5.3%, a surcharge of 7.5%, and a surcharge of 30.0% after April 2, 2025, with a total tax rate of 42.8%.
It is important to determine whether the dart kit is primarily considered a sports item or a musical instrument to select the correct HS code.