Frequently Asked Questions
(Compiled from reading many pages, my own experiences and mistakes)
ORDERING
Who should i email?
-
sigma@sigmachemical.com.cn
Where is the latest price list?
- Check the first message
here
What payment methods are available?
- Bank transfer (euro, us dollar, aus dollar), Wechat, Paysend, Wise, Alibaba, Bitcoin, USDT, Eth, USDC
Can i mix vials when ordering? 10 vials of one kind is too much!
- No, products are only sold as kits of 10 vials.
No answer, can i email you 10 times per day to get a faster reply?
- No, wait a minimum of 24-48 hours if you dont get an answer.
I want to buy international because its cheaper!
- You can only buy international products that arent sold domestic or when domestic is out of stock.
How to order?
1 - Email
sigma@sigmachemical.com.cn stating which products you want from the list and quantity, also from which warehouse and which payment method you would like.
2 - Wait for quote
3 - Make payment, send receipt of payment if you have one and write your FULL address (name written same way as in your ID, street name, street number, floor, block, apartment, door... city, state/region, postal code, country) and also include phone number for delivery agency.
4 - Wait for tracking and relax
DELIVERY
I already paid, do i get confirmation of payment?
- No, just wait and you will get a tracking number.
My tracking number doesnt show any information!
- Tracking info might not show or update instantly, give it some time, could be days. As long as you got a tracking number things are on the move and you will receive your parcel.
What is the difference between PostNL and Special Line?
- Special line minimizes customs risk. Its first sent from QSC to somewhere in your world region and from there its forwarded to your house. Special line is recommended, also takes a long time to show tracking updates.
I received my order but dont know what is each product!
- If you ordered domestic - email
sigma@sigmachemical.com.cn writing SKU LIST on the email subject
- If you ordered international - email
sigma@sigmachemical.com.cn asking for ID and providing your tracking number so they know who you are and what your order was.
How long does delivery take?
- This may vary but estimates are: US domestic less than a week, EU domestic about a week, International 2-4 weeks.