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
Flavor is every vaper’s first sensory memory — and the key measure of any device’s quality. Since our founding, YiHi has stayed true to its philosophy: “Customer first, innovation for the customer.” For us, flavor is the soul of chip development. The Birth of SXi-Q — Effortless Multi-Profile Switching In October 2015, alongside the launch of the SXmini ML Class, YiHi introduced its self-developed SXi-Q system. For the first time, users could create five fully customizable profiles (C1–C5). Whether switching between different atomizers or adapting to various e-liquids, users could fine-tune settings on a PC and upload them to the device — delivering a “one device, many flavors” experience. Intelligent Taste Curve — Drawing the Path of Flavor In May 2016, with the debut of the SXmini Q Class, SXi-Q entered a new era with Intelligent Taste Curve (SXi-EQ) technology. Select SXi-EQ modein the software and choose from five flavor curves (S1–S5). Each curve features 20 adjustable power pointsacross a 10-second heating cycle, allowing precise control in 5-second intervals. From a gentle preheat to an explosive instant ramp-up, users can design their own flavor curveand save it directly to the device. The system also offers pre-set classic modes: Soft: Gradual 75% → 100% power for a smooth, delicate vape. Hard / Strong: 125% → 100% ramp-down for instant vapor and flavor burst. Neutral: Balanced and consistent for all-day vaping. Flavor Beyond Just “Good” or “Bad” With SXi-EQ, flavor is no longer a subjective “good” or “bad” — it becomes measurable, designable, and repeatable. Like mixology or baking, it invites vapers to be part of the…
In the vape industry, performance isn’t just about stacking hardware specs — it’s about smart, flexible software innovation. As a pioneer of China’s original vape chip technology, YiHi started a new era of firmware upgrade and customization in 2014, driving the industry into a new age of high-performance cloud chasing. GUI Software SXi-Q — The Ultimate Upgrade & Control Tool YiHi’s self-developed graphical interface software, SXi-Q, bridges the gap between users and the chip. With SXi-Q, both brands and end-users can easily upgrade firmware and fine-tune multi-dimensional parameters, keeping devices at peak performance while delivering a truly personalized vaping experience. From 30W to 60W — A Milestone in Power Evolution In 2014, YiHi introduced the SX350 30W — marking the rise of China’s original vape chip. Thanks to SXi-Q’s upgrade capability, the SX350 evolved step-by-step: 35W power boost 40W & 50W performance expansion Reaching 60W maximum output This upgrade journey not only extended the product’s life cycle but also delivered more stable and powerful output, fueling the growth of the cloud-chasing market. Intelligent Flavor Curves — Your Personal Flavor Master Upgrades aren’t just about higher wattage. YiHi made flavor optimization a core mission. Through intelligent flavor curve control, our chips precisely manage heating power and temperature changes, releasing the full potential of your e-liquid. The result? A smooth, layered, and rich vaping experience. Why Upgradeable & Customizable Matters Always Evolving, Never Outdated Firmware upgrades keep your device ahead of the curve — no forced hardware obsolescence. Tailored to Every Vaper From beginners to enthusiasts, adjustable flavor and power settings let everyone find their perfect vape. Boost Brand Competitiveness Brands can respond…
