220 to 110 Voltage Converter

ST series step-up & down transformer is an AC voltage converting device.Using it to convert the multi-kind net.voltage into a general output voltage under which all the electronic units are safe for use within the rated power range.

● Input voltage:AC110V or 220V

● With fuse protector or with over current protector

● Output voltage:AC110V or 220V

step-up & down transformer Dimensions and Weight
Specification L*W*H(mm) Wt.(Kg) Remark
100W 117*125*133 2 Full Power
200W 127*170*133 2.8
300W 3.4
500W 4.3
1000W 172*170*148 7.1
1500W 205*200*183 10.8
2000W 12.5
Company Profile


Yiyuan Electric Co., Ltd. is a high and new tech enterprise specialized in manufacturing electrical power products for power supply systems. Our main products are Automatic voltage regulators ( AVR), Uninterruptable power suppliers (UPS), Inverters (INV), Emergency power source (EPS), Battery chargers and Battery Energy Storage System (ESS) etc.

As a result of our attention on quality and reliability, our products have been approved by TLC & CCCF. And we have attained CE, TUV, FCC, PCT and ISO9001 certificates, with UL pending. In addition to our economical prices and customer service, it has helped our products to gain popularity and good reputation globally.

Eight years of specializing production has made our products best-selling in the world market, like Russia, Southeast Asia, Africa, Mid-east regions, North America etc, and have enjoyed good reputation from the customers all over the world.

Special Service

Made of our clients need, from the product structure, Product appearance, casing LOGO, box & user manual printing, and so on all our clients need.

When you would not deal with us for OEM or ODM, also welcome to work with us for our brand. And you should have clear idea in running the brand and a good ability to expand market.

Ⅲ、Package design:
We offer free package design services to help you meet critical business objectives for OEM. If your company needs a powerful logo or catalog book, also to ask about cheap design services.

After you place an order, you may need the product picture professional for market development and sales promotion, let us know and enjoy our free Photography service.

Ⅴ、Sourcing agent:
When you need any other China electric products which it is relate to our industry, welcome to ask us as your agent to find the right manufacturer for you. We have a good intercommunicate between China manufacturers. And we are the legal company to help you to get the competitive price and good supplier.

How to Order
Contact us
1. Send inquiry from the button below
2. Send E-mail to sales@yiyen.com 4. Call us +86-577 27772136, 27772122
Discuss details
1. Get our quotation
2. Confirm the models & quantity
3. Confirm shipping fee and total price
4. Confirm PI
Make the payment
Make the payment by T/T(Bank Transfer) / Western Union etc.
Delivery goods
Goods will be sent ASAP after payment confirmed.
Receive goods
1. Get tracking number to tracking the pacakge
2. Please cooperate the delivery when the parcel arrived
Order finished
Congratuations! Order finished.
  1. 1
    Is small order less than 100pcs accept?

    Yes, you can buy small order in our online shop

  2. 2
    What kind of payment do you accept?

    We accept T/T, L/C At sight, PAYPAL, Western Uion, Credit Card or MoneyGram.

  3. 3
    What about your delivery time?

    We have a lot of products in stock, the delivery time would be within 3 working days If out of stock , we will check the delivery time for you.Actually, it's up to your order QTY, but should about 15days for 20'feet container.

  4. 4
    How to ship my order? Is it safe?

    For small package, we will send it by Express, such as DHL,FedEx,UPS,TNT,EMS. That’s Door to Door service. For big packages, we will send them by Air or By sea, ensure the package safety.

  5. 5
    Would you offer FROM A, FROM E or C/O?

    No probelm, we would apply for this certificate to government.

  6. 6
    Where is your market?

    Our products are popular on Middle east, Italy, Australia and Malaysia etc.

  7. 7
    Can you use our LOGO?

    YES, we can use your logo if you have good qualiy and big QTY.

  8. 8
    Can you send goods to YIWU or GUANGZHOU?

    No problem, we have many customers in YIWU and Guangzhou.

  9. 9
    What certificates do you have ?

    We have CE, ISO, IP65, ROHS.

  10. 10
    Do you have a catalogue? Can you send me the catalogue to have a check of all your products?

    Yes, please contact us on line or Email us, then we would send the catalogue.

  11. 11
    Do you have a price list include all products?

    We only have few mainly products price list for your reference. For the others, please kindly send us your demand, then we would quote accordingly.

  12. 12
    I can’t find the product on your catalogue,only have par no. or picture, will you search for me?

    Our catalogue shows most of our products, some new, we didn't update, so please feel free to contact us with the part no. or picture.

  13. 13
    Could I ask making a new mould?

    Sure,please offer 2-5pcs samples for us design and produce for you.

  14. 14
    How long to make a new mould?

    30-45 days depending on the samples' complexity.

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