Frequently Asked Questions

Here you can easily find frequent questions as per FAQs below. If you are not finding what you are looking for, just ask us for help. We could be reached 7/24.


General Questions

We located in Hangzhou, Zhejiang Province. The nearest airport is Xiaoshan International Airport (about 25 km), Nearest Seaport Shanghai ( 250 km) and Ningbo ( 160 km).

T/T Transfer, Letter of Credit ( LC), Paypal, Western Union, D/A, O/A, or D/P are all acceptable.

We know what customers care, so we will protect the privacy of our customers and never disclose it to the third party before you don’t agree.


Services Info

We have strict quality control over the source of raw materials for QC and QA. Also, we are available for a third party inspection such as SGS, Intertek to ensure the quality. Our pricing is based on the investigation of the market and we are favorable to share mutual benefits.

We are delighted to inform that we are able to ODM and OBM with our Mastelf logo Brand. We are currently promoting our brand, so you’ll be getting an additional discount once distribute our products.

(1) Basically, it’s paid by the customer side for the first cooperation.
2) In most circumstances, we provide FREE service to repeat customers according to evaluation and tests.
3) We can ship out the regular samples timely in 2-3 days.

OEM Available! It is necessary to provide us with drawings or pictures of the new products you desire. And our team will respond to you in 24 hours once have your request.

mastelf faq

Emergency Questions

We’re able to offer after-sale service. Once complaints occurred such as quality or other issues including carton damage, quantity shortage, etc.
We kindly request you to tell us of the issue by Email or if possible with a report attached. Our team will contact you as soon as possible within 24 hours.

Ask For A Quick Quote

We will contact you within 1 working day, please pay attention to the email with the suffix “”