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OEM/ODM & Wholesale FAQ

Your comprehensive guide to manufacturing, custom audio solutions, and bulk logistics with YONG YUNG. Find technical answers regarding our bone conduction technologies, certification compliance, and private-label ordering processes.

Corporate Capacity & Factory Trust

Q1: What is the difference between your OEM and ODM services for audio products?

OEM (Original Equipment Manufacturing): You provide the industrial design (CAD files) and firmware specs, and we handle the precise mechanical engineering, tooling, and mass production.

ODM (Original Design Manufacturing): You select a base framework or structural template from our private catalog, and we customize the acoustic tuning, color combinations, materials, and logo placement.

A: Yes. We highly respect intellectual property. We sign a mutual NDA before you share any industrial designs, schematic diagrams, or proprietary firmware binaries with our R&D team.

A: We welcome transparency. You are fully authorized to schedule a third-party audit or quality inspector to check our production lines and perform randomized product testing prior to final container loading, provided you notify us 5 working days in advance.

Technical Specs & Customization

Q4: Can we customize the Bluetooth pairing name and voice prompts?

A: Absolutely. For orders meeting our standard MOQ, we can customize the Bluetooth pairing name, power-on/off voice prompts (in English, Spanish, German, etc.), and the startup audio jingle to align perfectly with your brand identity.

A: Yes, our in-house software and firmware engineers can develop dedicated companion apps (iOS & Android) supporting OTA (Over-The-Air) firmware updates, custom EQ presets, and touch-control remapping for your private label brand.

A: Our sports headphones feature an IPX5 to IPX7 rating (sweat and heavy rain resistant). Our specialized swimming bone conduction headphones are strictly rated at IPX8, meaning they can be continuously submerged in water up to 2 meters deep and feature built-in local MP3 storage for underwater playback where Bluetooth signals cannot travel.

A: We strictly follow the AQL Level II (Acceptable Quality Limit) sampling standard. Every single headphone batch undergoes rigorous automated testing, including frequency response curves matching (tolerance within $\pm$1.5 dB), Total Harmonic Distortion (THD <0.5% at 1kHz), and battery cycle aging tests.Our manufacturing processes and products comply with major international standards, including ISO 9001, ISO 14001, CE, FCC, RoHS, and BSCI.

A: To ensure excellent connectivity and low latency, we partner with industry-leading chipset vendors including Qualcomm (QCC series), Besta, and JL (Jerry), depending on your performance tier and budget requirements.

A: Our premium ANC headphones utilize hybrid active noise cancellation (feedforward + feedback microphones) achieving a verified noise reduction depth of -35dB to -42dB within the 100Hz–3kHz frequency range.

A: Yes, our bone conduction lineup utilizes high-precision mechanical vibrators that transmit sound waves directly through the temporal bone to the inner ear, rather than air-conduction speakers disguised as bone conduction, ensuring true open-ear safety and minimal sound leakage.

A: Our headphones are designed with outdoor sports in mind. They are rated to operate reliably within a temperature range of -10°C to 55°C (14°F to 131°F), ensuring the lithium batteries remain stable during both winter jogs and summer outdoor workouts.

Regulatory & Certifications

Q12: Do your headphones comply with US and European regulatory standards?

A: Yes. Our export models hold valid, third-party verified CE (Red), FCC, RoHS, and REACH certifications. We work with accredited testing labs such as SGS and TÜV SÜD.

A: All our lithium-ion polymer batteries come with dedicated protection circuit modules (PCM) to prevent overcharging and short circuits. Every battery cell batch is verified by valid UN38.3, MSDS, and IEC 62133 test summaries required for international transit.Our standard terms are 30% deposit upon order confirmation and the 70% balance settled before final shipment.

A: We ensure our hardware design allows for components to comply with WEEE (EU) recycling directives. For specific European countries, we can provide the required material breakdown data to support your local EPR (Extended Producer Responsibility) compliance registration.

A: We are capable of manufacturing headphone housings using PCR (Post-Consumer Recycled) plastics upon request. If your brand aims for a completely sustainable audio line, we can source certified materials to match your ESG procurement goals.Our standard terms are 30% deposit upon order confirmation and the 70% balance settled before final shipment.

Trade Logistics & Operations

Q16: What is your Minimum Order Quantity (MOQ) for headphones?

A: Our standard MOQ for OEM/ODM orders is 1,00 pieces per model (supporting 1-2 color variants). For White-Label (ready-to-ship) products with custom logo printing, we offer a lower MOQ starting at 300 to 500 pieces to help you test your local market.

Standard Stock Samples: 2–5 working days.

Custom OEM/ODM Samples: 7–15 days (depending on tooling and cosmetic modifications).

Mass Production: 7–15 days after deposit confirmation and packaging artwork approval.

A: You can contact our B2B sales team directly via our “Contact Us” or “Request a Quote” forms. While we charge a nominal sample fee and shipping cost upfront, the sample fee is 100% refundable once your subsequent mass production order meets our standard MOQ.

A: Yes. Before starting the full injection molding and assembly lines, we will send you a finalized Pre-Production Sample (PPS) with your exact logo and packaging for physical sign-off.

A: Our standard payment terms are 30% T/T deposit upfront upon contract signing, and the remaining 70% balance paid against the Bill of Lading (B/L) or after final pre-shipment inspection at our factory. For long-term partners with stable history, we can evaluate flexible L/C options.

A: We primarily operate under FOB (Free On Board) Shenzhen/Guangzhou or EXW (Ex Works) terms. However, if your business does not have a local freight forwarder, our logistics team can coordinate DDP (Delivered Duty Paid) air or ocean freight directly to your commercial warehouse or Amazon FBA center.

A: We offer a 12-month manufacturer’s warranty starting from the date of cargo delivery. If any product exhibits functional defects due to manufacturing or component failure under normal usage, we will replace or credit those units in your subsequent batch.

A: To eliminate the friction of shipping minor quantities back and forth internationally, we typically provide 1% to 2% spare units or essential components (like ear cushions, charging cables) free of charge directly inside your bulk shipping container.We are committed to sustainable practices and ensure all materials comply with international environmental regulations, such as RoHS.

Packaging Support

Q24: What custom packaging options do you offer?

A: We offer end-to-end packaging solutions, including premium gift boxes, eco-friendly corrugated boxes, and blister packs. We also strictly support eco-conscious and plastic-free packaging trends to help your brand meet modern environmental standards in the US and EU markets.

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