Frequently Asked Questions

Advice and answers from the OSALO Team


Yes, we are a calculator manufacturer with 18 years of experience. Our factory is in Huizhou City, Guangdong Province, and our global marketing center is in Guangzhou City.
The main products are calculators, subdivided into scientific, tax, check&correct, desktop, PC key, pocket, and other series, especially scientific calculators, OSALO provides a good learning tool for students worldwide.
OSALO has sold its products to more than 80 countries and has collected millions of customers in more than 150 countries worldwide. In addition, it has branches in Thailand, Bangladesh, and agents in the United Arab Emirates, Saudi Arabia, Ghana, and other countries.
1. Standardized production, strict product quality inspection
2. Direct factory price
3. Sufficient stock and short delivery time.
4. OEM/ODM label customization
5. Rapid product development helps to win the market.



Sure. Our products have passed the international authoritative qualification certification. We have the following certificates: CE, UKCA, ISO9001, RoHS.
1. Key Silkscreen Abrasion Test
( With a force of 500g, using a special test eraser, rubbing continuously for 100000 times the font does not fall off.)
2. Key Strike Life Test
( After continuously striking the key 1,000,000 times with a force of 150g.the elasticity and conductivity are both normal.)
3. Anti-static Test
( Test the product’s resistance to direct electrostatic discharge from the operator to nearby objects to evaluate the performance of the test product when subjected to electrostatic discharge.)
4. Constant Temperature and Humidity Environment Test
( Simulate low temperature(-10°C) high temperature(50°C)and high humidity environment to test whether the product is normal under special conditions.)


Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.
First, let us know your request or application. Secondly, quote according to your requirement or our suggestion. Third, sample confirmation and deposit payment for formal order. Fourth, arrange production.
Samples need 2-3 days, OSALO&CTPLUS brand products have spot sales; OEM custom order production takes 30-45 days.
Of course, you can send your inquiry to us and we will find it for you on time.
Yes, we often offer discounts. Different products also have different offers. If you want to get more product preferential policies, please feel free to contact us to get preferential treatment.


Yes, our company’s professional team to do brand planning, marketing services for you.
OSALO&CTPLUS brand products are available in stock. The MOQ for OEM customization is 2000pcs/ model.
Yes, we have our own mold development room and R&D staff to develop products according to your requirements.


We supply samples, but their fees and freight charges should be borne by the customer.
You can send us a message directly on the official website, or send us an email at We’ll get back to you within 24 hours.
Yes, of course. We welcome customers to visit the factory and provide reception services for customers.


Generally, 30% deposit in advance and 70% payment before shipment.
Payment can be by T/T, L/C, D/P D/A, MoneyGram, Credit Card, PayPal, or Western Union. Cash. or Escrow.


lt depends on your order. Normally, it could be shipped by sea, by air, or by express(EMS, UPS, DHL, TNT, FEDEX and etc.), please confirm with us before placing orders.

Contact Us


+86 188 2001 6136


Guangdong OSALO Electronic Technology Co., Ltd.

Room 606-1, 6Floor, Xijiao Commercial Center, No.159 Middle Qiaozhong Road, Liwan District, Guangzhou