| HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
|---|---|---|---|---|---|
| 8479891000 | Doc | 55.0% | CN | US | 2025-05-12 |
| 8501710000 | Doc | 32.5% | CN | US | 2025-05-12 |
| 8501723000 | Doc | 57.5% | CN | US | 2025-05-12 |
| 8503009550 | Doc | 58.0% | CN | US | 2025-05-12 |
| 8503009520 | Doc | 83.0% | CN | US | 2025-05-12 |
| 8543706000 | Doc | 55.0% | CN | US | 2025-05-12 |
| 8543708000 | Doc | 55.0% | CN | US | 2025-05-12 |
| 9620003090 | Doc | The rate applicable to the article of which it is an accessory+30.0% | CN | US | 2025-05-12 |
| 9620005000 | Doc | 60.3% | CN | US | 2025-05-12 |
| 8504909690 | Doc | 55.0% | CN | US | 2025-05-12 |
Solar Pond Oxygenator
A solar pond oxygenator is a device used to increase dissolved oxygen levels in ponds and other bodies of water using solar energy. These systems are typically employed in aquaculture, water gardens, and ecological restoration projects to support aquatic life and maintain water quality.
Purpose:
The primary purpose of a solar pond oxygenator is to counteract oxygen depletion in water bodies. Oxygen is crucial for the respiration of fish, plants, and beneficial bacteria. Depletion can occur due to several factors including:
- Decomposition of organic matter: As leaves, algae, and other organic materials break down, they consume oxygen.
- High temperatures: Warmer water holds less dissolved oxygen.
- Excessive algae growth: While algae produce oxygen during photosynthesis, their decomposition consumes it.
- Stagnant water: Lack of water movement reduces oxygen replenishment.
Function:
Solar pond oxygenators function by utilizing photovoltaic (PV) panels to convert sunlight into electricity. This electricity powers an air pump or a diffuser, which introduces air into the water. The air bubbles increase the surface area of contact between the water and the atmosphere, facilitating oxygen transfer. Some systems also utilize a mechanical agitator to further enhance mixing and oxygenation.
The process can be broken down as follows:
- Solar Energy Capture: PV panels absorb sunlight.
- Electricity Generation: The panels convert solar energy into DC electricity.
- Powering the Oxygenation System: Electricity powers an air pump, diffuser, or agitator.
- Oxygenation: The pump/diffuser introduces air bubbles into the water, increasing dissolved oxygen levels. Agitators physically mix the water, promoting oxygen transfer.
Usage Scenarios:
- Aquaculture: Maintaining adequate oxygen levels is vital for fish survival and growth in fish farms.
- Water Gardens & Koi Ponds: Enhancing the health of fish and aquatic plants, reducing odors, and preventing stagnation.
- Ecological Restoration: Improving water quality in lakes, ponds, and wetlands to support aquatic ecosystems.
- Stock Ponds: Providing oxygen for livestock watering ponds, particularly in warmer months.
- Remote Locations: Ideal for ponds where access to electricity is limited or unavailable.
Common Types:
- Direct-Drive Systems: The air pump is directly powered by the solar panel. These are simpler and more affordable but output varies with sunlight intensity.
- Battery-Backed Systems: Include a battery to store solar energy, providing consistent oxygenation even during cloudy weather or at night. More expensive but more reliable.
- Floating Systems: The solar panel, pump, and diffuser are mounted on a floating platform, allowing for easy deployment and adjustment.
- Submersible Systems: The pump and diffuser are submerged in the water, reducing noise and visual impact.
- Surface Agitator Systems: Utilize a solar-powered motor to drive a propeller or paddlewheel, creating water circulation and oxygenation. These are often used in larger ponds.
- Diffuser Systems: Utilize an air stone or diffuser to create fine bubbles, maximizing oxygen transfer.
Based on the provided information, classifying "solar pond oxygenator" requires careful consideration of its components and function. It appears to be an electromechanical device used to introduce oxygen into a solar pond, likely utilizing solar energy. Here's a breakdown of potentially relevant HS codes:
- 8479891000: This code covers “Machines and mechanical appliances having individual functions, not specified or included elsewhere in this chapter; parts thereof: Other machines and mechanical appliances: Other: Electromechanical appliances with self-contained electric motor: Air humidifiers or dehumidifiers”. While not a direct match, an oxygenator could be considered an appliance with a self-contained electric motor performing a specific function (oxygenating water). The total tax rate is 55.0% (0.0% base tariff, 25.0% additional tariff, and 30.0% additional tariff after April 2, 2025).
- 8501710000: This code covers “Electric motors and generators (excluding generating sets): Photovoltaic DC generators: Of an output not exceeding 50 W”. If the oxygenator incorporates a small photovoltaic generator to power its motor, this code might be applicable. The total tax rate is 32.5% (2.5% base tariff, 0.0% additional tariff, and 30.0% additional tariff after April 2, 2025).
- 8504909690: This code covers “Electrical transformers, static converters (for example, rectifiers) and inductors; parts thereof: Parts: Other: Other Other parts: Other”. If the oxygenator contains electrical components like transformers or converters, this code could apply to those specific parts. The total tax rate is 55.0% (0.0% base tariff, 25.0% additional tariff, and 30.0% additional tariff after April 2, 2025).
According to the provided reference material, the HS code options related to 'solar pond oxygenator' are limited, with only the following 3 found.
It is important to note that the final classification depends on the specific design and components of the oxygenator. If the oxygenator incorporates a photovoltaic generator, both 8479891000 and 8501710000 could be considered. If it contains electrical components, 8504909690 might be relevant for those parts.