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Shanghai Chenzhu Instrument CO., LTD.
Shanghai Chenzhu Instrument CO., LTD.
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FAQ Area

  • How do you ensure the quality? How do you ensure the quality?
    • We only accept qualified raw materials with certification. For example, we have the most modern quality assurance factory for raw material inspection and selection of isolated signal conditioner.


    • During the production process, Chenzhu strictly follows the requirements of the ISO9001 quality management system for management. 


    • All production data can be recorded and tracked.


    • 5 years' warranty and life-long maintenance.


  • How to determine a model? How to determine a model?

    Please confirm the input data, output data and another function  you need. For example, if you want  carrier current transmitter to transfer complicated current like 0~1A into industry-standard output, you can contact us.


  • Do you provide free sample? Do you provide free sample?

    We open for apply free sample. 

    For example, if you want a sample of isolated barriers, you just need to contact us and we will send it for free. 


  • Are you trading company or manufacturer? Are you trading company or manufacturer?

    We are manufacturer in the field of automation and safety, based on Shanghai, providing own brand product and also ODM/OEM services.


  • What is the delivery time? What is the delivery time?

    ≤ 50 pcs, generally it is 3~7 working days after 100% down-pay; 50-200 pcs, it is 2~4 weeks after 100% down-pay according to quantity; More than 200 pcs, please contact with our support.


  • What is your terms of payment? What is your terms of payment?

    100% T/T in advance.


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