STE and Capacitor Suppliers at the Spring 2025 ACE

The Spring 2025 Asia Charging Expo took place on March 28 at the Shenzhen Qianhai International Conference Center. Chongdiantou reported 122 exhibitors across power-management ICs, power semiconductors, passive components, manufacturing and finished-product brands. Its April 7 report focused on fifteen capacitor suppliers, including STE.

The original orders the companies by their English brand names and explicitly says the sequence is not a ranking. This adaptation retains all fifteen profiles. Dates, capacity figures, certifications, awards and customer references below are the publisher's April 2025 reporting, not a fresh audit or an endorsement by STE.

BERYL

The report identifies BERYL, the Zhaoqing-based manufacturer as established on March 25, 2004, with registered capital of RMB 51.065665 million and Liu Yongpeng as its legal representative. It locates the business in Zhaoqing's Duanzhou district and describes research, manufacturing and sales of aluminum electrolytic, stacked-polymer and wound-polymer capacitors, supercapacitors and modules.

Reported annual production capacity was 2 billion units. The profile names ISO 9001, ISO 14001, IATF 16949 and an intellectual-property management system. It states that the company had applied for more than 170 core technology patents, including granted US and Japanese invention patents, and had introduced polymer capacitors above 220 WV.

The profile also describes provincial engineering and enterprise technology centers and materials research with organizations in Germany, the United States and Japan. It lists high-tech-enterprise and specialist “Little Giant” recognition, a China Patent Excellence Award, intellectual-property recognition, provincial brand awards and the Zhaoqing government quality award. Related coverage concerns PD3.1 applications, five BCE supercapacitors and power-tool capacitor developments.

CHAOYANG

The source traces the Yiyang, Hunan manufacturer to January 1996, naming CD11G and CD60 aluminum electrolytic families. It reports registered capital of RMB 3 million and identifies Li Weiyang as legal representative.

Its history describes a move from manual operations, with initial fixed assets below RMB 200,000, to a fully automated line in 2005. At publication, the profile reported fixed assets above RMB 80 million, total assets above RMB 90 million, more than 260 staff, annual capacity of 860 million capacitors and annual output value above RMB 90 million.

The HN brand's applications include supplies, lighting, chargers, household appliances, communications and industrial controls. The source lists customers including Zhejiang Hongyao, Anhui Shilin, Guangdong Yanyang, Changzhou Jutai, Qianshi Lighting, Jiangxi Heli and GE through a domestic operation; these remain attributed historical references.

The company profile names a product-quality certificate from 2003, ISO 9001:2015 certification in 2016, provincial specialist-enterprise recognition in 2018 and provincial high-tech recognition in 2021. It describes cooperation begun in 2019 with a Hunan University professor on 15,000-hour LED-lighting electrolytics and capacitors for adapters and charging equipment.

DGCX / Chengxi

Dongguan Chengxi was reported as established in 2008, with a 35-mu production base in Heyuan, Guangdong. Its development focus was smaller dimensions, lower noise, precision and customized products.

The listed range includes X2 safety capacitors, metallized-film capacitors, leaded and surface-mount Y capacitors, varistors and thermistors. Applications cover lighting, photovoltaics, industrial power, adapters, phone chargers and power banks. The profile describes compact capacitor ranges for GaN chargers and low-loss, high-current, humid-heat-resistant products for energy storage.

It reports ISO 9001:2015 and ISO 14001:2015 systems, CQC, UL/cUL, TÜV and ENEC product approvals, and RoHS/REACH statements. A related article concerns a Chengxi capacitor identified in an Anker 100 W GaN product.

Hongan

Dongguan Hongan was founded in 2002, according to the report, and combines development, manufacturing, sales and trading of aluminum electrolytic and polymer capacitors. The profile reports ISO 9001:2015 and ISO 14001:2015 and annual production approaching 4 billion units.

It describes customized development and exports to Europe, North and South America and Southeast Asia. Listed applications include communications, switching supplies, LED drivers, new-energy inverters and professional audio.

The Chinese source describes a very-low-temperature to 150°C product range but prints the lower value as “55°C” without a minus sign. This adaptation does not silently reinterpret that ambiguous value. The report's linked application roundup provides further historical context.

JK / Junkang

Junkang's profile dates the company's establishment in Shenzhen to 2005 and its move to an expanded plant in Liaobu, Dongguan to 2016. It describes a focus on middle- and higher-grade aluminum electrolytic capacitors, drawing on manufacturing experience associated with Taiwan.

The reported portfolio covers long-life, low-impedance, low- and high-temperature products for adapters, audio amplifiers, medical equipment, lighting, vehicle inverters and appliances. It also includes compact and elongated capacitor formats developed for GaN fast chargers and special adapters.

The range spans low, medium and high voltage, liquid-electrolyte and polymer construction, with versions targeting low leakage, lifetime and reduced size. Related reports cover application cases, a Meizu PANDAER 67 W charger and an interview with the supplier.

JK-ET / Jiankun

The article identifies Dongguan Jiankun as established in July 2008, with ceramic, film and molded-package divisions. It reports more than 6,000 m² of space, over 130 personnel and combined monthly capacity of 120 million units.

The surface-mount range includes molded X1Y1 and X1Y2 safety capacitors, MOVs and NTC thermistors. The leaded range includes X1Y1/X1Y2 capacitors, varistors, X2 safety and boxed-film capacitors, and medium-/high-voltage ceramic capacitors.

The source says three product categories and ten series had safety approvals, naming CQC, UL, VDE, ENEC, TÜV and KTL and referring to GB and IEC requirements. It also reports ISO 9001, ISO 14001 and ISO 45001. IATF 16949:2016 certification was being pursued, rather than stated as already obtained.

JingQin

The profile dates JingQin to 2013, with a Shenzhen research headquarters under Shenzhen Kuaike Electronic Components and a Huizhou factory entering production in 2019 in Zhongkai High-tech Zone. Its focus is surface-mount varistors, thermistors and X/Y safety capacitors.

The article lists patented approaches including dual-Y capacitors, parallel multi-chip Y capacitors, parallel and series multi-chip thermistors, X capacitors and three-terminal Y capacitors.

Reported management systems include ISO 9001:2015, ISO 14001:2015 and IATF 16949. Named product and environmental frameworks include CQC, cUL, TÜV, KC, ENEC, IEC/CB, RoHS, REACH and halogen-free assessment.

The laboratory description covers surge-current and lightning testing, repeated combination-wave tests, destructive withstand testing, impulse voltage, 85°C/85% RH exposure, high-temperature endurance, thermal shock, salt spray and vibration. Application areas include LED protection, industrial and switching supplies, 5G base stations, consumer electronics, white goods and automotive electronics. Related articles examine its surface-mount NTC and MOV offerings.

JSH / Wanjingyuan

Yiyang Wanjingyuan was reported as founded in 2005 and recognized as a high-tech enterprise. Since 2015, it had concentrated particularly on liquid-electrolyte and polymer capacitors for PD supplies.

The profile lists product ranges for 20 W, 30 W, 65 W, 140 W and 200 W PD applications. It describes voltage and surge withstand, compact size, low ESR, high-temperature performance and lifetime as development priorities. Those supply power levels are application groupings, not standalone capacitor ratings. A linked interview discusses the company's PD-market focus.

KNSCHA

Guangdong KNSCHA is introduced as part of the KNSCHA group, with headquarters, research and operating centers, sales branches and manufacturing bases in Dongguan, Huizhou and Hunan. The source describes overseas activities and high-tech and specialist-enterprise recognition.

The portfolio includes aluminum electrolytic capacitors, supercapacitors and lithium-ion capacitors, power-electronics film capacitors, ceramic capacitors and varistors. It reports IATF 16949, ISO 9001:2015 and ISO 14001:2015 and numerous patents.

The article refers to State Grid testing of its aluminum electrolytics, AEC-Q200 requirements for hybrid capacitors, and cUL, VDE, ENEC, KTL and CQC approvals for safety capacitors. Listed markets include power electronics, automotive, industrial control, new energy, communications and consumer products.

A separate development direction concerns silicon-carbide diodes and MOSFETs, associated with a southern third-generation-semiconductor industrial base. The company's management philosophy and emphasis on quality, technology and service form part of its source profile. Related articles concern complete capacitor sets for PD charging and interviews about aluminum electrolytic and film technology.

Koshin

The report dates Koshin to 1984 and describes an integrated group developing, designing, manufacturing and selling aluminum electrolytic and conductive-polymer aluminum capacitors. Its operations also include factories for automated production equipment, lead pins and molds.

The profile discusses lower impedance, higher ripple-current capability and service life as product objectives. High-voltage electrolytics and low-voltage polymer capacitors are identified for GaN PD fast-charging applications. The article does not present a common test proving a comparative reliability advantage.

KYET

Dongguan KYET's profile states that the company was founded in 2008 in Changping and opened a Zhongshan production base in 2011. Products named include 310/350/380 V safety capacitors, CBB capacitors for wireless charging, MMKP82 double-sided metallized resonant capacitors and compact boxed MPBH devices.

The source also dates initial wireless-charging CBB development to 2007, before the stated company-establishment year. Both dates remain attributed historical statements; the discrepancy needs clarification if used as a formal corporate timeline. It describes 2.4 mm product thickness and cumulative shipments of 2 billion pieces for the wireless-charging offering.

For PD fast charging, the report discusses compact dimensions, a broad specification range, low noise and 100 kHz testing. It names ISO 9001:2015, UL, ENEC, CQC and REACH and refers to technical patents and a founder with more than twenty years of capacitor and circuit-design experience.

Services listed include circuit development, capacitor selection and customization, circuit optimization and application-failure analysis. The source names Midea, AUX, Gree and Haier in customer coverage and Tongda, Steelmate and Edison Opto among partners. These are the original report's statements, not newly verified relationships. Related coverage includes wireless-charging CBB products, the ZZEC series and the Autumn 2024 exhibition.

Sancon

Nantong Sancon is described as an aluminum-electrolytic capacitor developer, manufacturer and seller established in 1995. The profile reports a site of 35,000 m², building area above 30,000 m² and more than 800 production and inspection machines or instruments.

It gives total assets of RMB 300 million, annual capacitor sales of 1.5 billion units, annual revenue of RMB 500 million, and distribution to more than ten countries and regions. The source refers to production organized under ISO 9001:2008 and identifies the company as a Jiangsu specialist enterprise and national high-tech enterprise.

The linked articles discuss GaN-specific capacitors and components reported in products from Anker, IKEA and HOTO. These links remain historical application references.

STE

The STE section identifies the Shantou bonded-zone company and gives its establishment date as 2012. Its core categories are ceramic capacitors, film capacitors, varistors and thermistors. The report identifies a 75,000 m² development and production campus in Shantou's bonded zone.

It describes provincial and municipal engineering research centers for resistor-capacitor and sensitive components, and UL-recognized varistor and safety-capacitor laboratories. Management systems named are ISO 9001, IATF 16949 and ISO 14001. Product-approval references include CQC, UL, VDE, KTL, ENEC and CB. Each statement remains tied to the source date and the applicable certificate scope.

The article positions the product range across power supplies, smart appliances, lighting, communications, industrial control and new-energy vehicles. Six original photographs accompany this supplier section.

Its three related readings cover STE components reported in Geely and StarCharge EV charging products, EcoFlow and Loncin portable power stations, and the SMD-X1Y1 surface-mount Y capacitor. They provide the application and product context associated with the exhibition profile, rather than evidence of a new customer endorsement at the event.

TRX

Sichuan TRX's history is traced to Shenzhen TRX Electronics in 2004. The report states that Anhui TRX was established and began production in 2023.

The portfolio includes SMD-NTC thermistors, SMD TRX capacitors and DIP TY capacitors, with ceramic-material research supporting further applications. The profile describes twenty years of activity in ceramic Y capacitors and use in more than one hundred fast-charging products. That adoption count is the source's statement, not a separate audit here.

Related reports examine compact Y capacitors, a surface-mount-versus-disc NTC comparison, and Y-capacitor applications in appliances and lighting.

YX / Yunxing

Fujian Yunxing is described as established in 2007, with registered capital of RMB 50 million. The source names Hexin Electronics, Yunxing Technology and Lianyuan Electronics as subsidiaries, with four sites totaling 60,000 m² in Yunling Industrial Development Zone and more than 450 employees.

Its activities cover development, design, production and sales of polymer and aluminum electrolytic capacitors. Applications include lighting, wind and solar generation, industrial supplies, adapters, phone chargers and power banks.

The profile reports ISO 9001 and RoHS/REACH compliance, a proprietary electrolyte invention patent and four utility-model patents relating to equipment improvements. It also names a Zhangzhou enterprise technology innovation center, a county talent-work liaison role and repeated local major-taxpayer recognition during 2013–2021.

The source makes a market-position claim for lighting capacitors and names Philips, Opple and NVC in long-term cooperation. These remain attributed statements. A linked report discusses polymer capacitors identified in products from Anker, ASUS and UGREEN.

What the exhibition report records

The article documents the breadth of capacitor technologies represented at the March 2025 event: aluminum electrolytic and polymer products, film and ceramic capacitors, X/Y safety devices, thermistors and varistors. The original photographs and related-reading links are retained in the accompanying source record.

The report closes by describing the exhibition as an opportunity for product demonstrations and technical exchange and says Chongdiantou would continue following component-industry developments. It does not establish interchangeability between the listed products or provide a uniform benchmark of the fifteen suppliers.

Figures and tables from the original report

The following figures retain their original captions, markings and historical context. Transcribed tables present the values shown in the published images; product selection should use the specifications for the selected part.

Illustration from the original report — source figure 1 — Figure 1. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 2 — Figure 2. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 3 — Figure 3. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 4 — Figure 4. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 5 — Figure 5. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 6 — Figure 6. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 7 — Figure 7. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 8 — Figure 8. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 9 — Figure 9. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 10 — Figure 10. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 11 — Figure 11. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 12 — Figure 12. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 13 — Figure 13. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 14 — Figure 14. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 15 — Figure 15. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 16 — Figure 16. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 17 — Figure 17. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 18 — Figure 18. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 19 — Figure 19. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 20 — Figure 20. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 21 — Figure 21. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 22 — Figure 22. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 23 — Figure 23. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 24 — Figure 24. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 25 — Figure 25. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 26 — Figure 26. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 27 — Figure 27. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 28 — Figure 28. Illustration from the original report. Image: Chongdiantou. Image source

Illustration from the original report — source figure 29 — Figure 29. Illustration from the original report. Image: Chongdiantou. Image source

Jiankun thermistor and gas-discharge-tube exhibits — source figure 30 — Figure 30. Jiankun thermistor and gas-discharge-tube exhibits. Image: Chongdiantou. Image source

Jiankun thermistor and gas-discharge-tube exhibits
Series	Application	Model	Lead pitch / dimensions as printed
NTC thermistor	Inrush-current limiting	SMD-NTC1.5M1.8A2	F6.0/7.0×5.6×2.4
NTC thermistor	Inrush-current limiting	SMD-NTC1.5M4.5A2	F6.0/7.0×5.6×2.4
NTC thermistor	Inrush-current limiting	SMD-NTC030M4A2	F6.0/7.0×5.6×2.4
NTC thermistor	Inrush-current limiting	SMD-NTC050M5A4	F10/11.4×6.0×2.4
NTC thermistor	Inrush-current limiting	SMD-NTC050M6A4	F10/[Unreadable due to glare]
NTC thermistor	Inrush-current limiting	SMD-NTC20M4A4	F10/11.4×6.0×2.4
Gas-discharge tube JGSX51	Signal-line protection	JGSX51-302X	5.5×6.0×20
Gas-discharge tube JGSX51	Signal-line protection	JGSX51-202X	5.5×6.0×20

Historical exhibition sample-board photograph. Product photographs remain in the source image; these models and dimensions are not a current availability or selection commitment. Glare-obscured cells are marked explicitly rather than inferred from adjacent rows.

Jiankun medium/high-voltage ceramic capacitors and GDT exhibits
Series	Application	Model	Lead pitch / dimensions as printed
DIP medium/high-voltage ceramic capacitor	High-frequency interference suppression	Y5P101K10KV	F10/D8.0mm/T5.0
DIP medium/high-voltage ceramic capacitor	High-frequency interference suppression	Y5U222M6KV	F10/D9.0mm/T4.0
DIP medium/high-voltage ceramic capacitor	High-frequency interference suppression	Y5V103M2KV	F7.5/D10mm/T2.8
DIP medium/high-voltage ceramic capacitor	High-frequency interference suppression (compact)	Y5P101K6KV	F5.0/D5.5mm/T2.8
DIP medium/high-voltage ceramic capacitor	High-frequency interference suppression (compact)	Y5U222M6KV	F10/D8.2mm/T3.2
DIP medium/high-voltage ceramic capacitor	High-frequency interference suppression (compact)	Y5V103M2KV	F5.0/D7.5mm/T2.5
Gas-discharge tube JGSXH81	Coaxial-cable protection	JGSX81-600X	8.0×6.0×20
Gas-discharge tube JGSXH81	Coaxial-cable protection	JGSX81-800X	8.0×6.0×20