When designing smartphones, we noticed that their smart phone manufacturers tend to balance a large number of functions, a larger capacity battery, new sensors, and keeping the phone slim and light. Over the years, we have achieved this goal by removing certain components such as the headphone jack and reducing the size of the SIM card.
powdery urea formaldehyde resin wood glue is a kind of standard urea formaldehyde resin powder product without filler, modifier and curing agent. It has the advantages of good strength, small deformation, wide use, convenience, long storage period, convenience for long-distance transportation, etc. It has good water resistance, mildew resistance, pollution-free and other properties, and its bonding strength is greater than that of the wood itself. According to the different requirements of cost and process, other adhesives and curing agents can be added and used according to a certain proportion to achieve the optimized effect.
Scope of application:
It can be used for splicing after adding curing agent (or hot pressing), assembling general material, veneering, wood-based panel manufacturing, wood door, bending wood, MDF, particleboard bonding etc.
Product features:
Appearance: White fine powder
Fineness: 90% passing 80 mesh standard sieve
Gel time: According to the proportion of curing agent
Bonding strength: ≥1.4Mpa
Storage period: (at 20 ℃) ≥ 1 year
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However, in the future, the mobile phone does not seem to need to use an external physical SIM card, because it may be built into the handset itself, or at least this is what ARM hopes to achieve. They recently announced a new technology that can be seen in future ARM-based chips with built-in SIM cards, which means that the traditional SIM card slots in our phones can be used for other functions or completely abolished.
As ARM pointed out, this is not limited to mobile phones as it is also applicable to non-mobile devices based on ARM chips. It can also be used in IoT devices with built-in SIM cards. There are some devices that have already deployed similar technologies.
This includes Apple’s iPad, which has a built-in SIM card, and Apple Watch 3 also comes with its own built-in SIM card.