Frequently Asked Questions

We are a professional manufacturer. Transformed from a prestigious state-owned enterprise and officially established in 2009, Sealine operates dedicated manufacturing plants and heavy-duty generator assembling centers backed by decades of deep structural lineage and research intelligence.

Our facility is located in Changzhou, Jiangsu Province—China’s prominent and globally recognized production base for diesel power products. We specialize in manufacturing and exporting high-tier engines, generator sets, water pumps, and heavy construction machinery. We pay meticulous attention to every engineering detail with a rigorous 100% full load testing protocol executed before any delivery.

Transit Distance for International Clients:
• 30 minutes from Changzhou Benniu Airport (CZX) by car.
• 2 hours from Shanghai Railway Station via high-speed rail.
• 3 hours from Shanghai Pudong International Airport (PVG) by car.

Rated Power (Continuous Load): Describes the exact, verified amount of electrical power the portable generator can produce continuously and safely over prolonged running cycles.

Maximum Power (Surge Load): Represents the transient peak power that the generator can produce for short periods. Motor induction starting (such as air compressors, heavy pumps, or concrete mixers kicking on) is a primary example of maximum surge power requirements.

In industrial power systems, kW represents active/real power, while kVA represents apparent power. Calibrated at the standard international power factor of 0.8, the calculation structures out as follows:


• 1 kW = 1.25 kVA
• 1 kVA = 0.8 kW

Yes. All engines can be fully customized and calibrated according to our clients’ precise engineering designs, specific regional emission standards, and mechanical configurations.

Sealine generators operate flawlessly across a wide variety of weather temperatures. However, they must be securely protected from harsh environmental elements when idle to completely eliminate short-circuiting and oxidation rust. Furthermore, the generator frame must be properly and safely grounded to earth before startup to eliminate any risk of electrocution.

Our standard commercial MOQ is 1 set. We welcome both single-unit backup power trials and large-scale industrial fleet procurement orders.

Sure. We provide premium OEM and private label services, as long as you provide the official trademark authorization certificate allowing us to utilize your brand logo on your company’s behalf.

• Standard Terms: T/T 30% advance deposit; the remaining 70% balance should be settled against the Bill of Lading (B/L) copy.
• VIP Clients: D/P (Documents Against Payment) frameworks can be opened for regular partners with established high reputations.
• Sample Orders: PayPal is accepted for single-set orders. Please coordinate and verify transaction details with our sales team first.

Our standard production lead time is 20 days upon receiving the advance deposit payment. However, if the specific models you purchase are currently active in our rolling warehouse inventory, we can process customs and dispatch them out immediately.

Our current localized manufacturing scaling output reaches up to 5,000 complete sets per month, ensuring consistent supply for tight project schedules worldwide.

We back our equipment with 1 year or 500 operational running hours warranty, whichever milestone occurs first, covering all primary mechanical and electrical configurations (excluding consumable wearing and tearing parts). If genuine quality defects arise during the active period, we will supply free relevant replacement components immediately. After the warranty lapses, spare parts remain permanently available for our buyers at direct cost prices.

Components and maintenance kits can be purchased rapidly through any of our international local dealers, or dispatched directly from our manufacturing facility. We ensure an ironclad, unbroken spare parts supply chain. Comprehensive schematic part details are located transparently inside the installation and operation instructions manual.

Yes, strongly recommended. We advise international buyers to procure a basic batch of standard wearing and tearing parts (such as filters, gaskets, and belts) within each major machine order to avoid local project delays during routine operational maintenance.