A: After production, all articles are delivered to QC center, only qualified products can be release to
the next procedure. Meanwhile, You are welcome to ask for free samples.

A: 1) For our first cooperation, free sample will be provide buyer afford the shipping cost.
2) For our old customer, we will send free sample , even though new designs sample, when have stocks.
3) Sample delivery date is within 24 to 48 hours, if have stocks; Customer design is about 3-7 days.

A:Yes, we had already do OEM service for more than two world famous Brand in chromatography area.

A:For vials & caps moq is 1pack(100pcs), for hand crimper moq is 1pcs,for syringe filter moq is 1pack(100pcs)