1. Identify the certification mark

When the purchase, must check whether there is "3C" certification mark on the certificate, model specification, rated voltage, length, manufacturing date, certification number, inspection, implementation standard, factory name, factory address mark is clear.

2.Pay attention to packing

Pay attention to exquisite packaging, printing clear, model specifications, factory name, factory address complete. The cable of false submersible pump is often "3 have no product", but also have the ambiguous mark such as place of origin such as China is made, China some province some city wait, be equal to to do not have standard place of origin actually.

3. Look at this expression

When buying, pay attention to the appearance to smooth round, uniform color, feel good. If rubber wire and submersible pump cable, sheath, insulation can burn cigarette butts, and the surface is not damaged.

4. Check the leads

The wire must have a certain luster and moderate softness, the result of the wire size must meet the requirements of national standards. Submersible pump cable copper core cross-section, fine copper luster is soft, otherwise it is inferior.

5. Check the length

When buying, do not covet cheap price, only buy 90m or 80m, even without the length of submersible pump cable mark, the length must meet 100(+/-)0.5m standard requirements.