220V Speed Controller EC Inline 4 Inch Duct Fan Stainless Steel Mixed Flow Ventilation System OEM Customizable Complete Set

We are an innovative technology company specializing in thermal management systems and air environment optimization solutions, with core competencies in high-efficiency motor drive technology and intelligent climate control systems that give us significant technical advantages in heat exchange and airflow control domains. Operating with a flat management structure, our 150-member professional team led by industry veterans is organized into four core departments: an R&D Center (45 staff, 30%) with PhD-led technology research teams, an Engineering Manufacturing Department (90 staff, 60%) staffed by process engineers and skilled technicians, plus dedicated Quality Control and Marketing Departments. As an internationally certified engineering solution provider, we’ve established a comprehensive talent development system featuring university-industry collaborations and internal mentorship programs to cultivate technical professionals, while our dual-career-path system (technical/managerial) provides diversified development opportunities – our current organizational structure distributes 45 staff (30%) in R&D, 90 (60%) in manufacturing, and the remaining 15 across quality control and marketing functions.

1. who are we?
We are based in Guangdong, China, start from 2025,sell to North America(22.00%),South America(17.00%),Northern Europe(12.00%),Western Europe(11.00%),Oceania(8.00%),Southeast Asia(8.00%),Eastern Europe(6.00%),Africa(5.00%),Mid East(5.00%),South Asia(3.00%),Eastern Asia(2.00%),Southern Europe(1.00%). There are total about 101-200 people in our office.

2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3.what can you buy from us?
Ventilations, Duct Fan, Exhaust Fan, Silent Fan, HVAC Equipment

4. why should you buy from us not from other suppliers?
A tech firm specializing in smart ventilation, AC & cooling with 50+ patents. Focus: EC motors & air solutions. Certifications: FCC/CE/IATF/ISO. Award-winning R&D.

5. what services can we provide?
Accepted Delivery Terms: FOB,CFR,CIF,EXW,DDP；
Accepted Payment Currency:USD,EUR,CAD,HKD,CNY;
Accepted Payment Type: T/T,L/C,PayPal;
Language Spoken:English,Chinese,Spanish,Japanese,Portuguese,German,Arabic,French,Russian,Korean,Hindi,Italian