About Et Limited - Electric Components Supplier in China

Et Limited is a China‑based supplier that currently lists nine distinct printed circuit board (PCB) products. The catalogue includes High Tg PCB, Aluminum PCB, PCBA, PCB Assembly, Printed circuit board, PCB fabrication, Halogen free PCB, 10 layer PCB, and Multilayer PCB (2‑12 layers). All items fall under the printed circuit board family, which is generally classified in the HS chapter 85 under code 8534. The supplier is recorded as an imported tier with a harbor trust rating.

The listed products cover both material and assembly services, ranging from substrate variations such as high‑temperature glass‑reinforced epoxy (high Tg) and aluminum core to full board assembly (PCBA). Layer counts span from two up to twelve layers, including a specific 10‑layer offering, and the catalogue mentions halogen‑free formulations that meet environmental restrictions. Et Limited’s portfolio therefore addresses typical requirements for consumer electronics, automotive, and industrial control applications that rely on multi‑layer, high‑performance PCBs.

Product Range and Specialties of Et Limited

The catalogue’s nine entries represent common PCB formats. High Tg PCBs use glass‑reinforced epoxy resin with a glass transition temperature above 150 °C, while Aluminum PCBs employ a metal core for improved heat dissipation in LED and power modules. The PCBA and PCB Assembly entries indicate that the supplier can provide surface‑mount component placement and soldering services, completing the board from raw substrate to finished assembly.

In the global market, FR‑4 is the standard substrate for most multilayer boards, with copper foil thickness typically 1 oz/ft² (35 µm) and trace widths down to 4 mil for high‑density designs. Buyers often require compliance with IPC‑6012 for qualification and IPC‑2221 for design standards, as well as RoHS or REACH restrictions on halogen and lead content. Typical quality grades for high‑performance boards include IPC‑A‑610 for solder joint acceptability and UL 94 for flame retardancy of the material.

Trade and Export Information - Et Limited

China remains one of the largest exporters of printed circuit boards, with shipments primarily destined for the United States, European Union, and emerging markets in Southeast Asia. PCBs are classified under HS code 8534, and customs authorities commonly request a commercial invoice, material safety data sheet, and conformity declarations for RoHS or CE marking.

Export logistics from China usually adopt FOB terms from ports such as Shanghai or Shenzhen, with containers packed in anti‑static, moisture‑barrier bags and sealed in corrugated boxes. Buyers often arrange CIF or DDP to their destination, and freight forwarders may require a test report confirming impedance, dielectric loss, and dimensional tolerances according to IPC standards.

Sourcing from Et Limited - Buyer Guidance

When sourcing from Et Limited, buyers should request a sample PCB that matches the intended layer count, substrate type, and copper weight to verify dimensional accuracy and surface finish. It is advisable to obtain IPC test reports, RoHS compliance certificates, and a declaration of material composition before placing a bulk order.

Verification of the supplier’s manufacturing capabilities can be supported by requesting a copy of the factory’s ISO 9001 quality management system certificate, although such certification is not listed in the supplied facts. Confirm the minimum order quantity, typical lead time for multi‑layer production (often 15‑30 days), and packaging specifications such as anti‑static bags and desiccant inclusion.

What types of PCB substrates does Et Limited offer?

The supplier lists high‑temperature glass‑reinforced epoxy (High Tg) and aluminum core substrates. These cover standard FR‑4 material as well as thermally conductive options for power or LED applications.

Can Et Limited provide fully assembled boards?

Yes, the catalogue includes PCBA and PCB Assembly entries, indicating that component placement, soldering, and final testing services are available. Buyers can request a complete assembled board or receive the bare PCB for separate assembly.

Which layer counts are available?

Products range from two‑layer boards up to twelve layers, with a specific 10‑layer offering. The multilayer PCB entry covers boards with 2‑12 layers, allowing flexibility for complex designs.

What environmental standards should buyers verify?

Buyers should request RoHS or REACH compliance documentation to ensure restricted substances are within limits. For halogen‑free boards, a declaration confirming the absence of halogenated compounds is also advisable.

What certifications are typically required for PCB imports?

Importers commonly ask for IPC‑6012 qualification reports and UL or CE marking declarations. A material safety data sheet and test report on impedance or dielectric loss are also typical requirements.

What are the usual packaging methods for shipped PCBs?

PCBs are normally packed in anti‑static, moisture‑barrier bags with desiccant packets to control humidity. The bags are then placed inside double‑wall corrugated cartons to protect against static discharge and physical damage during transit.

What lead time and minimum order quantities are typical?

For multi‑layer boards, lead times of 15‑30 days are standard after design approval. Minimum order quantities often start at a few hundred square centimeters or one 10 ft container, depending on board size and complexity.