In 2013, YiHi launched its first original vape chip, the YiHi SX130, marking the beginning of China’s era of original e-cigarette chip innovation. At a time when high-power regulated devices were still in their infancy, we were already shaping the future cloud-chasing market. The YiHi SX200 soon followed, delivering the perfect balance of power and stability, becoming the go-to core chip for many brands. The Sigelei Legend series gained massive orders thanks to the SX200. Next came the YiHi SX220, whose outstanding performance powered legendary iPV devices like the iPV2 and iPV2S, sparking a global trend in compact regulated box mods. The YiHi SX300 entered the main stage of the high-wattage cloud market, adopted by multiple domestic and international brands. Many leading manufacturers — including Dovpo, KSD, SXK, Hotcig, Yosen, and many more — chose the SX300 for their devices, earning strong consumer praise worldwide. Models like the Yosen SX Mod 50W became bestsellers, driven by the chip’s exceptional performance. With the launch of the YiHi SX330, device performance and user experience reached new heights, securing its place in flagship models from Sigelei and Pioneer4You. For years, the SX series chips powered nearly half of China’s high-performance vape market, winning international respect for Chinese manufacturing. Today, SX is more than just a chip — it is a symbol of China’s original vape technology. We believe that innovation drives the future, and technology is the strongest foundation for any brand.
The Circuit Board Is My Starry Sky By Chen Zhenjiang — Founder of YiHi & SXmini Childhood Spark When I was ten, summer evenings were spent diving into a giant green dumpster in our small town. Old TVs, broken radios—inside, I found more than just junk. I found wires, copper coils… and dreams. As the copper unrolled in my hand, I saw my own galaxy forming. In scrap metal, I found my future. A Harsh Start in 2003 Fresh out of university with an electronics degree, I tried sales. Three months—zero deals. That’s when I learned: Oscilloscopes don’t lie. But people at dinner tables sometimes do. The turning point? One late night in a Taiwanese factory. The boss returned unexpectedly, ready to scold me for working overtime. Instead, he saw a young man sweating over a circuit board, adjusting an audio chip. He put down a cold Coke, and quietly walked away. Three months later, I became the youngest R&D supervisor. Carrying a Company on My Back In 2010, I founded YiHi Electronics. The name means “Billions and the Sea”: “Billions” — the vastness of technology “Sea” — the depth of Chinese manufacturing Back then, to save 2 yuan on a bus ride, I carried 30 kg of equipment to meet clients on foot. My sweat soaked my shirt, salt maps forming on my back. In a tiny rented room, I soldered every board by hand. Failed chips piled up like a bronze hill. The hardest day? I couldn’t afford 1 yuan for a takeout box after a client dinner. I walked away, fist clenched, old wounds bleeding again. Made in China — Written in Silicon We said no to contract manufacturing. “YiHi must be printed on our own circuit boards.” We rejected fake labels. “Respect in technology doesn’t come from pretending to be American.” YiHi Electronics Born in Dongguan, China · Since 2010 YiHi — Sailing forward with silicon, into a sea of innovation SXmini — A tiny device, with big ambition
Vaping offers a modern alternative to traditional smoking. However, not all vapes are the same. Understanding the differences between disposable vapes, pre-filled pods, and open pod systems can help users make safer, more sustainable choices. SXmini focuses on open pod systems to provide flexibility, performance, and reduced environmental impact. 1️⃣ Disposable Vapes What they are:· All-in-one devices where the battery and pod are integrated.· Designed for single use; the entire device is discarded when the e-liquid runs out. Environmental impact:· High plastic and electronic waste.· Short lifespan increases cumulative waste.· Limited flavor options, creating more frequent replacement. SXmini insight: Disposable vapes are convenient for beginners but generate the most waste and cost over time. 2️⃣ Pre-Filled Pods What they are:· Devices with a reusable body but pre-filled, single-use pods.· Pod is discarded after use, while the battery or device body can be reused. Environmental impact:· Reduces device waste compared to disposable vapes.· Pod still generates plastic and electronic waste.· Offers a limited set of flavors per pod. SXmini insight: Pre-filled pods are a step toward sustainability but still produce waste with each pod replacement. 3️⃣ Open Pod Systems What they are:· Refillable pods that can be used multiple times with different e-liquids.· Examples: SXmini Puremax 2, Puremax Q, and future SXmini pod lines. Environmental impact:· Significantly reduces plastic and electronic waste.· Longer device and pod lifespan.· Users can experiment with different flavors without extra packaging. SXmini insight: Open pod systems combine performance, flavor flexibility, and eco-friendliness. They are the most sustainable choice among modern vapes. 4️⃣ Comparison Table Feature Disposable…
Airflow and draw mechanism play a key role in vaping. They decide how much vapor you get, how strong the flavor feels, and how smooth each puff is. At SXmini, our Puremax series pods and upcoming pod products are designed with adjustable airflow on the pod to give users flexible vaping styles. 1️⃣ What is Airflow? Definition:· Airflow means how air moves through the pod when you inhale.· It changes vapor size and flavor strength. SXmini insight:· All Puremax pods (Puremax 1, Puremax 2, Puremax Q) and future SXmini pods support adjustable airflow on the pod.· Tighter airflow = stronger flavor, smaller vapor.· Looser airflow = bigger vapor, smoother inhale. 2️⃣ Understanding Draw Mechanism Definition:· The draw mechanism is how the coil turns on.· Two types:· Auto-Draw: inhale to activate.· Fire Button: press a button to activate. SXmini insight:· Puremax 1: auto-draw only.· Puremax 2 and Puremax Q: dual mode (auto-draw + fire button).· MQ Class and G Class V2 (box mods): fire button only. 3️⃣ Airflow · Draw Style · Coil Resistance Airflow, draw style, and coil resistance (Ω) work together to shape your vape experience. Draw Style Airflow Setting Coil Resistance Experience PX/PX Pro Options MTL (Mouth-To-Lung) Tight 1.0Ω – 1.8Ω Stronger flavor, small vapor 0.8Ω / 1.2Ω RDL (Restricted Direct-Lung) Medium 0.6Ω – 0.9Ω Balanced flavor and vapor 0.6Ω / 0.8Ω DTL (Direct-To-Lung) Loose <0.6Ω Big vapor, smoother inhale 0.4Ω / 0.6Ω (Pro) SXmini insight:· PX Cartridge: 0.6Ω / 0.8Ω / 1.2Ω.· PX Pro Cartridge: 0.4Ω / 0.6Ω / 0.8Ω / 1.2Ω.· With the right airflow and…
The YiHi SX735J chipset is designed for premium single‑battery devices (18650/20700/21700). It offers multiple modes including Watt, Temp Control, Voltage, and the Exclusive Pure mode designed by YiHi. Despite its advanced features, operation is simple. Power On & Off Power on: press fire button 5 times quickly, logo appears, then main screen. Power off: 5 clicks → main menu → System Off → Shutdown. Lock/Unlock: press fire button 3 times to prevent misfires or child use. Mode Selection From the Mode menu, choose: Watt Mode: adjustable wattage for different atomizers. Temp Mode: Constant (stable) or Dynamic (fluctuating) control; supports Ni200, SS316L, and custom TCR. V.VOL Mode: fixed voltage output. Pure Mode: Exclusive Pure mode designed by YiHi for stable and clean output. Wattage & Flavor Settings In Watt Mode: scroll down → choose Soft, Neutral, Strong, or SXi‑EQ1/2/3. Custom Curves (SXi‑EQ): adjust output every 0.5s, from 50%–200%. In Temp Mode: switch between NORM, COOL, COLD, HOT, WARM, or use SXi‑EQ1 for a custom temp curve. Shortcuts & Features Resistance Lock: when atomizer changes, system asks to use old or new resistance. Brightness: menu → Tweaks → Brightness (10–100%). Screen Timeout: adjustable 15–90s. Temp Units: switch °C / °F. Room Temp Compensation: ensures accurate TC. Puff Counter: lifetime vs daily puffs; daily can reset, lifetime cannot (max 9,999,999). Protections Low Voltage: <3.2V → Low Battery. Short Circuit: output stops immediately. Low Resistance: <0.1Ω → no output. Overcharge: stops at 4.2V ±0.05V. Reverse Polarity: device protected if battery is inserted incorrectly. Key Specs Input Voltage: 3.4V–4.2V Wattage Range: 5–100W (depends on coil)…
Temperature control (TC) is one of the most important features in modern vapes. It helps ensure a consistent vaping experience, protects your coil, and prevents accidents like dry burns. At SXmini, our devices (not including sub-brand iPV series products) use advanced TC technology to make vaping safer and more enjoyable. 1️⃣ How Temperature Control Works Basic principle:• The heating coil in your vape heats the e-liquid to produce vapor.• Temperature control sensors detect the coil’s temperature in real time.• The device adjusts the power output to maintain the target temperature. SXmini insight:• Our Puremax 2, Puremax Q, MQ Class, and G Class V2 use precise chipsets that monitor the coil multiple times per second.• This ensures consistent flavor and vapor production, even when using different e-liquids. 2️⃣ Dry Burn Protection What is a dry burn?• A dry burn occurs when the coil heats without enough e-liquid, producing a burnt taste and potentially damaging the coil. SXmini solution:• Puremax lines (Puremax 2, Puremax Q) and future pod-based products feature e-liquid level sensors.• The device vibrates to alert you when the e-liquid is low.• By refilling promptly, you prevent dry burns and extend pod life. 3️⃣ Benefits of Temperature Control • Consistent Flavor: Your e-liquid is always heated at the ideal temperature.• Safety: Prevents overheating and protects the coil.• Device Longevity: Reduces stress on the heating element and battery.• Better Experience: More stable vapor, smoother hits, and less chance of accidental burns. SXmini insight: Temperature control is not just a feature—it’s a safeguard that ensures every puff is flavorful and safe. ✅…
With more ways to enjoy nicotine today, it’s important to understand the differences between vaping, heat-not-burn (HNB) devices, and traditional smoking. SXmini is dedicated to providing safer, enjoyable alternatives, and this guide helps you make informed choices. 1️⃣ Traditional Smoking What it is:Burning tobacco in cigarettes to inhale smoke. Key points:– Produces harmful substances such as tar and carbon monoxide.– Strong throat hit and classic tobacco taste.– Widely available and familiar to smokers. SXmini insight: Traditional smoking carries higher health risks compared to modern alternatives. 2️⃣ Heat-Not-Burn (HNB) Devices What it is:Devices that heat tobacco units without burning them, producing a tobacco-flavored aerosol. Key points:– Reduced harmful chemicals compared to traditional cigarettes.– Maintains some tobacco-like experience.– Uses special tobacco units instead of e-liquid. SXmini insight: HNB devices are popular for smokers looking to reduce harm while retaining a tobacco-like experience. HNB products are different from vaping products and are not designed for e-liquid. 3️⃣ Vaping (E-Cigarettes) What it is:Devices that vaporize e-liquids instead of burning tobacco. Key points:– Uses open pod systems or box mods (device shape may vary).– Produces vapor instead of smoke, with fewer harmful substances.– Wide variety of flavors and nicotine strengths available.– Devices like SXmini Puremax 2 and Puremax Q feature temperature control, dry burn protection, and e-liquid level vibration alerts for safer, more consistent use.– SXmini MQ Class and G Class V2 offer advanced performance and temperature control. SXmini insight: Vaping offers flexibility, flavors, and reduced harm. SXmini devices cater to both beginners and advanced users seeking performance, control, and a personalized experience.
✈️ Traveling with Your Vape Device When traveling, proper handling and packing of your vape is essential. – Travel lock: Only PX Cartridge series, PX Pro Cartridge series, and future SXmini pods feature travel lock functions to prevent accidental activation.– Protect the fire button: Always ensure the fire button on the device is protected to prevent auto-fire incidents, and handle the pod carefully to avoid leakage. Important: Lithium battery devices are prohibited in checked luggage. Electronic cigarettes are not allowed for use on airplanes. 🛡️ Preventing Leaks – Keep the device upright whenever possible.– Keep the pod securely attached and rotate it to travel mode when not in use to lock it, preventing accidental activation and leakage.– Store pods in a sealed bag or container for extra protection.– Regularly inspect the pod and device for any damage, cracks, or loose connections. 💡 Additional Tips – Avoid exposing the device to extreme heat or direct sunlight.– When storing the device long-term, partially charge it and recharge at least once a month to maintain battery health. ✅ Summary Safe travel with a vape requires attention to device power-off, fire button protection, pod locking, and proper storage. SXmini PX Cartridge and PX Pro Cartridge systems (and upcoming pods) feature travel locks, and careful handling ensures a leak-free, safe journey.
🌱 Why Choose Open Pod Systems? Open pod systems are refillable vaping devices that allow users to choose their preferred e-liquids. Compared to disposable or prefilled pods, open pods are:– More eco-friendly– More cost-effective– More flexible in flavor and nicotine selection SXmini open pod devices (such as Puremax 2 and Puremax Q) combine portability with smart safety features like vibration alerts, helping users enjoy vaping with confidence. 🔧 Daily Usage Tips 1. Filling E-Liquid– Always use high-quality e-liquids from trusted brands.– Avoid overfilling the pod to prevent leakage.– Wait a few minutes after filling before vaping, allowing the coil to absorb the e-liquid. 2. Avoiding Dry Burns– Some SXmini pod cartridges (such as the PX Cartridge and PX Pro Cartridge series, and upcoming pod models) are equipped with dry-burn protection, which automatically stops heating when e-liquid is insufficient.– Devices like Puremax 2 and Puremax Q provide vibration alerts to remind you when it’s time to refill. 3. Cleaning the Pod– Do not rinse the pod with water.– Instead, use a cotton swab or alcohol wipe to gently clean the pod’s exterior and connection points.– This keeps the device free of residue and ensures smooth performance. 4. Charging Safely– Use a reliable, good-quality charging cable (the original or a high-quality phone charging cable).– Do not overcharge; unplug the device when it’s fully charged.– If you leave the device unused for a long time, recharge it at least once a month to maintain battery health. 💡 Maintenance Reminders – Replace pods or coils regularly to ensure flavor quality.– Store the device in…
🌱 What is an E-Cigarette? An e-cigarette (vape) is a device that heats e-liquid into vapor for inhalation. Unlike traditional smoking or Heat-Not-Burn (HNB) products, vaping does not burn tobacco. SXmini focuses on advanced vape technology, aiming to deliver smarter, safer, and customizable alternatives for adult smokers. 🔋 1. Box Mods Box mods are larger vape devices with strong batteries and advanced chipsets. They are not always literally “box-shaped,” but they usually allow wattage adjustment, temperature control, and higher performance. – For vapers who love customization and cloud production, SXmini offers G Class V2 and SL Class V2, both featuring precise temperature control and powerful performance. 💨 2. Open Pod Systems Open pod systems are compact and refillable. Instead of prefilled pods, users refill them with their preferred e-liquids. This reduces waste, lowers costs, and provides more flavor and nicotine options. – SXmini’s Puremax 2 and Puremax Q are portable, easy to use, and come with vibration alerts to remind you when to refill. Perfect for beginners and everyday users. 📏 3. Compact Mods Compact mods combine the performance of a box mod with a smaller, pocket-friendly form factor. – The SXmini MQ Class is designed for those who want elegance, portability, and reliable performance in a compact body. 🔥 4. Heat-Not-Burn (HNB) HNB devices use specially designed tobacco units, heating them instead of burning. This reduces some harmful chemicals compared to cigarettes but still involves real tobacco. – Key difference: SXmini vapes use e-liquids, not tobacco. HNB is closer to traditional smoking, while vaping offers adjustable nicotine levels,…
