Step 1: The most crucial step is to determine what your needs are?

Before starting to search for suppliers, please confirm the following points:

Types of cables:

Power cable: used for transmitting electricity.
Communication/data cables: such as Concentric cable, coaxial cables, fiber optic cables, etc.
Control cable: used for instruments and control systems.
Special cables: such as fire-resistant, flame-retardant, rodent and ant resistant, high temperature resistant, marine cables, etc.

Technical Specifications:

Voltage level: such as 0.6/1kV, 10kV, 35kV, etc.
Conductor material: copper or aluminum? Bare copper or tinned copper?
Conductor size: commonly used AWG (American Wire Gauge) or square millimeter (mm ²)
Insulation and sheathing materials: PVC (universal), XLPE (good heat resistance), LSZH (low smoke and halogen-free, used in public places).
Number of cores: single core, dual core, triple core, multi-core, etc.
Color: Insulation color or sheath color.

Certification standards:

North American market: Looking for UL or CSA certification. This is the key to entering the US and Canadian markets.
European market: Must comply with CE marking requirements and follow EN standards (such as harmonized cable standards).
Australia/New Zealand: Looking for SAA certification.

Other regions: such as BSI in the UK, VDE in Germany, etc. Please confirm the mandatory certification requirements of the target country/region before purchasing.

Quantity: Is it used in small quantities for maintenance/personal projects, or in large quantities for engineering projects? This determines whether you are suitable for finding a distributor or directly finding a factory.