Rely on a 30-year Ni-Cd battery, Ni-Fe rechargeable battery specialist Up to 50 million Ah rate yearly | 16,000sqm factory | Nearly 300 technicians Holding 34 Years of Experience Hengming Fengyun Power Source is a high-tech company in Henan with more than $10 million in capital 30 years of experience. Our factory covers an area of 16,000 square metersis manned by 280 workers including 10 professional engineers. Hengming-branded products are popular in mainland China.