How Dusk mask is made by automatic machine?

How Dusk mask is made by automatic machine?

• Safety protection, dust filtering up to 95.
• Keep healthy and breathe at ease. Three-dimensional cutting, high-adhesion fit to the face design, better sealing, safer to wear.
• 4-layer protection, high filtration efficiency.
• Plastic aluminum nose clip for better fit. It is more comfortable to wear and prevents air from flowing from the side of the bridge of the nose, giving you double protection.
• Ultrasonic high-quality spot welding, firm and anti-detachment, effectively protect the filter layer.
• A functional nose pad design that prevents fogging and isolates the outside air.
• Triple structures design for long-time wearing and comfortable skin.
• Elastic band ear hook for easy stretch wear.

More details, please find https://www.iwistao.com/collections/mask/products/10-pcs-bag-dust-mask-pm2-5-haze-kn95-adult-child-protection-riding-mask-fish-mouth-or-three-dimensional-folding

IWISTAO HIFI 3 Inch Full Range Speaker 2 x 15W Whole Aluminum Casing

IWISTAO HIFI 3 Inch Full Range Speaker 2 x 15W Computer speaker Whole Aluminum Casing


It is All-aluminum casing and Ultra-thick material with precision CNC machining by independently developed. Choose a large magnetic 3 inch HIFI full range speaker unit, exquisite and compact, beautiful and generous

The system includes HIFI music player from iPhone 5s plus a tube Bluetooth 5.0 CSR8675 decoder plus a pair of FU50 tube amplifier, then plus a pair of 3 Inch Full Range Speakers.

More details, please find here
https://www.iwistao.com/collections/hifi-speakers/products/iwistao-hifi-3-inch-full-range-speaker-1-pair-2-x-15w-computer-speaker-whole-aluminum-casing-audio?variant=14136068341875

IWISTAO HIFI 3 Inches Full Range Speaker Solid Wood Labyrinth Structure for Tube Amplifier

IWISTAO HIFI 3 Inches Full Range Speaker Finished 1 Pair Solid Wood Labyrinth Structure for Tube Amplifier

This speaker cabinet is made of solid wood. Built-in a labyrinth structure, it can enhance the low-frequency radiant energy, make low-frequency dive deeper, effectively overcoming insufficient bass of commend full range speaker cabinet, make the speaker cabinet the full-frequency be more full and rich.


As you know, the greater the material density of the speaker enclosure, the less the vibration produced by the enclosure. Solid wood is more reflective of sound than other materials, and tightness of the wood is higher, and the sound can be effectively expressed by the vibration of the air inside the box. We often say that the sound of wooden speakers is warm, in fact, the word warm means the balance of tri-band that are low, medium and high frequency; if the frequency is too low or too high, it will make people feel uncomfortable. The advantage of wooden speaker is that its playback effect is good, the vibration of the sound inside the box is stable, and the sound effect will be balanced and full.


Its magnetic circuit system of speaker unit adopts the neodymium iron boron rare earth strong magnetic structure plus short circuit copper bushing, which improves its performance of music details from starting point. The choice of the cone is more exhaustive, when it is determined to use aluminum as its sound basin, it begins to this thin aluminum material has been studied in various ways. If it is thicker, its rigidity will be better, but its resolution is poorer, in contrast if it is thinner, the resolution is better, but its rigidity will be poorer. Finally, it was decided to use a thin aluminum to improve the rigidity from the shape and depth anodizing treatment. The aluminum treated in this process is almost the same as ceramic. So, the sound quality is also going to a new level, whether it is bandwidth, details and transients have an ideal performance!

More details, please find https://www.iwistao.com/products/iwistao-hifi-3-inches-full-range-speaker-finished-1-pair-solid-wood-labyrinth-structure-for-tube-amplifier?variant=31415207002227

2 x 80W HIFI Hybrid Amplifier Vacuum Tube Matisse Circuit Preamplifier Pure FET Power Stage Tube Rectifier 

It is a hybrid amplifier with tube and FET mixed, which has both vacuum tube sweet and moist, fine transparent flavor, but also has the strength and speed of transistor power amplifier, hardness and softness, totally natural. The unit then resume the models production again which has evaluated by Electronic Journal. After optimized and improved, compared with the original unit, it is elegant and dignified appearance, extraordinary taste, excellent sound quality, it got high positive feedbacks fully from customers.

1. 4 groups of signals input switching.
2. Built-in a power switch for 110V and 220V to accommodate different national voltage standard
3. Adopted preamplifier and power stage designing independently, interior layout is reasonable, clean and beautiful.
4. 7mm thick aluminum front panel drawing process with black, silver optional.
5. Advanced matte paint technology sheet steel cabinet, with high-gloss metal knobs, cellular cushions.
6. Red light flashing when pre-heat, the light turn into blue after pre-heat.
7. Adopted large-current relay delay with mute switch, the midpoint potential drift, overcurrent protection, to avoid damage to your expensive speakers.
8. Adopted gold-plated RCA connectors for inputs, with high-grade amber gold-plated oxidation terminals for outputs.
9. With three plug socket, it is easy to replace it with high-grade power cord.
10. Adopted ALPS 27 type blue shell sealed volume potentiometers.
11. Coupling capacitors are used in Germany or the German ERO WIMA polypropylene capacitors and other imported one.
12. Used 300W toroidal transformer power supply, adequate power, low radiation.
13. Adopted imported fast rectifier bridge, and 4 pcs imported 10000u filter capacitors.
14. Adopted lower heat resistance of aluminum blackened large comb-shaped radiator low power tube wear.
15. Adopted Hita chi Genuine FET power tube, good sound quality, stable!

More details, please find here, https://www.iwistao.com/products/2-x-80w-hifi-hybrid-amplifier-vacuum-tube-matisse-circuit-preamplifier-pure-fet-power-amp-stage-tube-rectifier-audio

IWISTAO HIFI Speaker Full Range 2.75 Inches Solid Wood Enclosure Inverte...

IWISTAO HIFI Speaker Full Range 2.75 Inches Unit 4 Ohm 15~30W 88dB Solid Wood Enclosure 1 Pair Inverted Structure

As you know, the greater the material density of the speaker enclosure, the less the vibration produced by the enclosure. Solid wood is more reflective of sound than other materials, and tightness of the wood is higher, and the sound can be effectively expressed by the vibration of the air inside the box. We often say that the sound of wooden speakers is warm, in fact, the word warm means the balance of tri-band that are low, medium and high frequency; if the frequency is too low or too high, it will make people feel uncomfortable. The advantage of wooden speaker is that its playback effect is good, the vibration of the sound inside the box is stable, and the sound effect will be balanced and full.

This speaker enclosure is handmade, and because of the inherent characteristics of solid wood, its appearance has the texture of solid wood itself. After the cabinet is polished, it is coated with paraffin oil. Buyers can be polished and waxed later to make it more interesting.

The speaker unit is selected from HIFI 2.75 inch full-range speaker unit, high sensitivity and wide sound range.

More details, please  find https://www.iwistao.com/collections/hifi-speakers/products/iwistao-hifi-speaker-full-range-2-75-inches-unit-4-ohm-15-30w-88db-solid-wood-enclosure-1-pair-inverted-structure?variant=31316092223603