GD900 is 1w/mk and is chinese in orgin. I checked on that long ago and it is junk and you don't know what was in it and was this reviewed on youtube?
*No matter how you get* especially aliexpress, ebay and amazon, and chinese sellers are always suspect. Always check thermal brands is genuine especially the MX-4 or -5 and Noctua, etc. Safest thing is just pay more for good brands and get generic paste from non-chinese sellers instead. Same issues with chips. 8 or so years ago, I bought well known two rail 5 pin high speed amp TO-220 made by LM something for a special project. Barely stronger than a generic TO-92 at 100mA drive into typical transformer, not even 1 amp and the signal was very distorted and did not reach full bandwidth potential, and the leads is full of impurities that snaps easily with one bend. I was following a reference circuit published in the data sheet for that amplifier IC.
Few years ago I bought FPM 256K x 16bit drams from chinese. Over painted then remarked and the solder pins, which I need to solder to a board to be upgraded wouldn't take solder at all, and even sanded away still would not take the solder at all and pins looked horrible.
One time I had a failing power cord with kettle plug on other end, that came with chinese electronics and cut it up for other use on a industrial power supply with screw terminals, then to my horror, 18 gauge! About 1mm dia. No where that unsafe cable can handle more than 500mA let alone surge current at turn on, ditto not safe for typical kettle power cord even on a 200W usage. Thrown away already.
CPAP blower advertised to sell EBMpapst part and featured first 4 photos of the pretty high quality blower, with correct part number, I got a genetic CPAP blower from aliexpress and way the the seller's page is nowhere any mention of any substitute at all. Only faint hint was last couple photos was the actual generic CPAP blower with out any part number at all, which I thought seller made a mistake including that generic blower in that page.
Way the frequency of issues with each order previously, I no longer will not deal with chinese anymore except for genuine surplus parts eg: fans, wires, connectors, adapters, and working project boards is about it.
I did occasionally get substitutes on correct part fan order. One time I got a delta made fan with San Ace label, Instantly gone in the bin. And one of the delta fan was so horribly made that delta don't do. Again gone into bin heaven. Even I did get different fan with correct part number but revision part numbers on both was different but this is not what I wanted, so I had to reorder again from another seller in order to get correct one.
The fan had same part number except for revision code, one is clockwise rotation while other one is counter-clockwise.
Another issue, I had with chinese is improperly made parts. One time I received extended battery pack from chinese for a netbook, and is widely sold by many sellers. Will fit but will not open up fully due to plastic blocking the lid from going futher. Only way is cut off the nonstructural along width of the battery, which does not do anything with battery itself or leave a opening to the electronics or internal batteries. After the alternation netbook is able to open up fully.
I see this chinese made generic parts fitment and electronics issues *ALL THE TIME* at work thanks to Apple does not made these OEM ipad parts available, only for iphones. I had to fight with ipad mini 2 yesterday, to get digitizer glass fitted correctly that took 3 hours to complete *and* not having to pinch the flexes, important when you don't want potential future warranty issue. Alternations include reposition the home button flex, reposition the front camera alignment pins holder, tweak the contact pins on the motherboard to stop the touch issues, even had to remove the white shim spacer under right bottom antenna so glass would not bulge when installed. Also I had to replace because that generic digitizer glass shattered easily during fussing, genuine glass is treated and does not crack that easily. It was from a reputable vendor in canada, not their fault as they import quality chinese parts anyway.
But there is a bad batch too often from same vendor. I had, yes five, bad screen assemblies, which are costly due to LCD and digitizer glass bonded together as a unit, for a ipad pro that failed tap tests but dragging passed, but tapping as as tap on a icon, typing on the keyboard etc failed. Had to pay bit more to get premium screen that passed or use white or black screen that worked properly only approved if we called customer if they don't mind the different color. Multiples times on another customer's ipad pros series as well. Another time I had seen screen assemblies for ipads built too thick using too thick adhesive to hold the screen stack together cause pressure marks. Worst of all mis-designed flexes that is dimensional wrong will not let screen to fit and cannot be relocated or folded away.
Even the newest ipad with usb-c replacement screens has thin adhesive rails and they are badly mis-positioned. You really NEED that adhesive positioned correctly to secure the screen strongly again because of warranty issues we don't want due to 1 year warranty. Because the aluminum frame where adhesive has to be bonded onto, to is only 1.5 to 2mm wide in many places. I had to rip all them off and re-tape with new tesa tapes and shave them off along the edge with a razor, time wasted. No we didn't buy cheap nor from bad vendor and that vendor we buy from is better than average so our hands is tied.
If you had to get your ipad's digitizer glass or screen replaced, you will lose magic pen support due to missing layers made for this.
Great Northern aka Canada.