Inside a Huge PCB Factory - in China

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Strange Parts : This video is because of you! I went through all of the comments from the previous factory videos, and seeing inside a PCB factory was one of your top requests. So keep the suggestions coming! I'll try and make as many of them happen as I can.

Xavier Ancarno : Please go to a battery cell factory - Lipo or Li-ion

Bassem Boustany : Is she giving you a tour or are you giving her a tour? Haha :D fascinating factory, great video, documentary level!

DanielC : Lilly: Yeah

Tech By Matt : now tour a pcp factory

Jeffery Rowan : I think it's great the that JLCPCB has reached out to the maker community. They have invested a lot of time and money supporting YouTube channels as well as providing a quality product at great prices.

Upcycle Electronics : Awesome! I just etched a test project yesterday and know I can't build my next design myself using laser printer toner transfer, (My minimum trace resolution is 0.4mm and need 0.2mm). The next step is to either hire a board house or completely revamp my prototype method. I've been eyeing JLCPCB for awhile but seeing behind the scenes really makes me more confident. Thanks. -Jake

Mauz Shaikh : I am amazed by the video and the amount of work you put in this video and aslo large amount of work is put just to make a circuit board...damn so complex who thought of this in the first place and how?

cyrilio : Lily is such a cute and fun rep.

0rang3z : This is TV level quality. I am beyond impressed by this channel and the insane amount of adventure and detail your videos have

MildManNerd : Could you see about a tour of the DJI drone manufacturing facility in Shenzhen?

J_RPM : Congratulations for the video, it's great! A few months ago I collaborated with them and they sponsored me a video. Seeing the finishing and quality of the PCBs I knew it was a great company, but what I could not imagine is how big and well prepared their facilities were.

ratmdex : dude she is cute as heck, I like how you broke her humble and professional expressions and by the end, she was as hyped as you!

alan wheeler : I've been designing and dealing with the manufacture PCB's for over 33 years and know the process, but this video was great!

Juboi : Aw man we need to start learning chinese

profdc9 : I am not sure how JLCPCB plates copper on their boards, but we've done this in our laboratory. Please research the process thoroughly if you attempt it, it uses toxic chemicals, especially formaldehyde. There are two steps: first electroless plating, then electroplating afterwards. I can explain how we electroless plate our 3-D printed parts. First they must be cleaned thoroughly, which for example can be done by using sodium hydroxide. Then the surface must be made hydrophilic by oxidation. We use hydrogen peroxide or sodium percarbonate for this, others use ammonium persulfate. Then we have to put a catalytic layer so that copper deposits on the surface. We use colloidal silver as our catalyst, which is deposited by alternately dipping in silver nitrate and tin (II) chloride. Then electroless plating is performed, with a mixture of EDTA as a chelator, triethanolamine as chelator and buffer, sodium hydroxide, copper sulfate, and formaldehyde as the reducing agent with the solution maintained at pH of 11 and at 50-60 C. Then the part is electroplated, which uses dissolved copper in an acidic solution, with copper sulfate, acetic acid, citric acid, and a few other chemicals that act to make the electroless deposition smoother, more even, and shinier. Then it is dipped in a protective solution like benzotriazole to prevent corrosion on the surface. The process we used is for an academic laboratory, so its likely JLCPCB's is more suited for mass production and not like the one I've described.

Archie Chen : What's the point of having Lily just saying "yeah" all the time in the video?

Felenov-official : JLCPCB. I have ordered a lot of boards from them. 2 layer, 4 layer, 6 layer. Some boards were production boards that I ordered thousands of. Very high quality boards very cheap and very fast. Recommend them.

Matrix8369 : This was an incredible video! Its amazing how much access they let you have to be able to show each step. I had a lot of fun learning just how many steps there actually are in making a board , and to think they can get it done in roughly 24 hours. Thats almost TO efficient lol.

Ujjwal Kumar : Take a shot everytime she says YAA.

Piet Muijs : Hearing protection isn't invented yet, lol. Poor working

kendall greene : asking why its yellow in a Chinese factory lul

Pete R : Dude you develop a Shenzhen belly :)

Marco Reps : Where are the piles of JLCPCB cardboard pens? ;)

Eh_Ryan On Twitch : Was she taking him on a tour or was he taking her on the tour LOL

Leslie Cheung : He comes off as genuinely a sincere and nice YouTuber of China. He seems to respect Chinese and her culture the way they are. Unlike other foreigners YouTubers who always to find faults about China.

Table Top : exposed beard in the clean room?

Limp Wibbler : $14 for 10 pcbs!!!! OMG that is insane. Like how is it that cheap with this process. Mass production is a beauty.

Unnamed Review Guy : Mannnn. Not that your editing was ever bad (it has always been really good) but this is just awesome. I love all the little effects that you put in. it really makes it very interesting to watch. Nice Job

Cicero Araujo : This is like willy wanka factory

thagotaberry : she got a pretty comprehensive tour there :D Good job dude

NickL Leeto : Girl just set the world record for "yeah" responses... :))

Cpt.Jack_ : "why are the whites so yellow here?" 10/10

Mustafa Ahmed : Yia

usbtechs : 167 time Yia , but i am not sure i am right , Is there somebody can help me correct it ?

FelixTheHouseFreak : That girl is so cute.

Tranxikoritian : Is Lilly visiting the factory? Seems like the guy already knows everything, Lilly just confirms with "yeah" lul

AF Bennett : It's funny how you tried to make ur knowledge sound like questions.

Megabobster : I'd love to see a silicon foundry making simple parts. Not like CPUs/GPUs/Memory, but ASIC/"glop tops"/mask ROMs, things like that. Things that are basically one-offs rather than mass produced

Zaire 59 : Go to a CPU manufacturing plant.

Isaac Itzkowitz : Next video should be how all the components soldered on to the PCB, I always wondered how it is done. Love this video and thanks for the subtitles as it was sometimes difficult to understand what she was saying. Great work keep it up!!

Jack Off : i bet he bed her right after

Okurka : You can see her thinking "What the hell is sodder?"

chadwick hayes : This is for all those people who say why can't America just make its own! Those people have no perspective of the infrastructure it takes to make anything

Johannes : Great video! There are so many machines involved and a fairly low amount of workers! You could almost produce these in Germany or the USA for similiarly low prices :)

Felix Krüger : This is soooo high quality! Always wanted to know how these things work. Factory tours are awesome!

Dor Amram : You gave her a great tour...!

mikeselectricstuff : Didn't show how they manage alignment - do they use x-ray to align with inner layers or just rely on the panel edge? Would also be interesting to know how they keep track of designs through the process, making sure they get the right films etc.

Yanis : Yeah

R M : Oh man, I used to work at a PCB factory in Shenzhen.