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- Создано: 01-04-22
- Последний вход: 01-04-22
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zbxyoptics.com
Описание: zbxyoptics.com A refractometer is a simple instrument used for measuring concentrations of aqueous solutions. It requires only a few drops of liquid, and is used throughout the food, agricultural, chemical, and manufacturing industries. A lensmeter or lensometer, also known as a focimeter or vertometer, is an ophthalmic instrument. It is mainly used by optometrists and opticians to verify the correct prescription in a pair of eyeglasses, to properly orient and mark uncut lenses, and to confirm the correct mounting of lenses in spectacle frames. Lensmeters can also verify the power of contact lenses, if a special lens support is used. The Chart Projector is an AC-powered device intended to project an image on a screen for vision testing. Ophthalmic examination chart projector including a rotatable chart carrying disc and a mask plate which are co-axial with each other. A phoropter is an instrument used to test individual lenses on each eye during an exam. Phoropters look imposing – like space-age visors – but are really an ingenious way to quickly determine the exact vision correction needed by your individual eyes. An optometry unit is a place where optometry is a specialized examination of the eye and related structures for defects or abnormalities. A lens edger matches the dimensions and shape of the optical lens with that of the frame to fit perfectly. Every optical lens's contour and thickness are unique depending on the form of correction a patient needs. Lens edging machines perform different functions, such as: basic automatic cuts.
Дата Публикации: 01-04-22
taicheng-highwayguardrail.com
Описание: taicheng-highwayguardrail.com Highway Roller Barrier is designed to prevent vehicles from colliding with obstacles, or to prevent wrong vehicles from entering the opposite traffic flow, which can reduce the occurrence of head-on collisions. Bridge Piers Against Collision is a protective device installed on or around the pier to protect the bridge. Its main purpose is to avoid damage to the pier when a collision occurs, thereby preventing the structural damage of the bridge and protecting the safety of the bridge. Pipe Blocking Airbag is a multi-specification and multi-shaped rubber product made of polymer synthetic materials such as rubber and fiber fabric through high-temperature vulcanization process for pipelines, culverts, sewage, desilting and maintenance. It is mainly used for drainage and sewage pipelines， emergency repair, and closed water test leak detection. It can quickly block water flow in different pipe diameters, planes and positions, and is an ideal tool for underground pipelines for drainage and sludge treatment.
Дата Публикации: 01-04-22
sqshrinklabel.com
Описание: sqshrinklabel.com Shrink sleeve labels are full-color, 360-degree printed labels that utilize heat in the application process to conform the label to the shape of the container. PETG Shrink Sleeves use PETG (Polyethylene Terephthalate Glycol) as the most heat resistant shrink sleeve material. They have high scuff resistance and excellent clarity. PVC Shrink Sleeves is a type of shrink wrap used for a variety of applications. The PVC stands for Polyvinyl chloride. Polyvinyl chloride is the third most-produced plastic in the world. PVC shrink wrap was the most commonly used shrink film until replaced several years ago by polyolefin (POF) shrink wrap. OPS Shrink Sleeves made available by us are made of substrate that is more cost effective than PET as well as also at the same time provides lowest vertical shrink percentage, thus adding to the consistent finish provided in the packaging. Shrink bands are pieces of plastic casing that wrap around bottles and jars to prevent tampering. Their popularity grew in response to the product manipulating scare that Tylenol experienced in 1982, in which it is believed that someone in Chicago tampered with medicine bottles on store shelves. Flat Shrink Bands can securely seal and protect tins, jars, bottles and more. These strong flat shrink bands will not only help to keep products from opening and spilling, but will keep them air tight and fresh as well. They assist in creating a tamper-evident seal that is ideal for packaging products like food and cosmetics. Pre-formed Shrink Bands are shrink sleeve bands placed over packages to seal and provide tamper evidence for your products. They are preformed to fit your products and can be used to provide a secure seal for many shapes of containers and tubs. Heat Shrink Wrap Bag is ideal for quickly securing and protecting products. Slip the product into the bag and use a heat sealer to seal the bag closed. PVC Shrink Bags have excellent clarity and brilliance, and help by providing a tamper-evident seal for your items. PVC shrink bags conform at a lower temperature than other shrink wrap plastic bags made from polyethylene or polyolefin materials. Polyolefin shrink bags are FDA approved for direct food contact, making them an excellent option for bakeries, delis, confectionaries, and more! Companies choose polyolefin shrink bags over PVC shrink bags because of the clarity, soft-touch, and reduced odor during shrinking.
Дата Публикации: 01-04-22
silitech-us.com
Описание: silitech-us.com Integrated circuit (IC), also called microelectronic circuit, microchip, or chip, an assembly of electronic components, fabricated as a single unit, in which miniaturized active devices (e.g., transistors and diodes) and passive devices (e.g., capacitors and resistors) and their interconnections are built up on a thin substrate of semiconductor material (typically silicon). The resulting circuit is thus a small monolithic “chip,” which may be as small as a few square centimetres or only a few square millimetres. The individual circuit components are generally microscopic in size. A capacitor is a device that stores electrical energy in an electric field. It is a passive electronic component with two terminals. Connector may refer to: Plumbing Electrical connector, a device for joining electrical circuits together (sometimes known as ports, plugs, or interfaces) Fan is a machine for producing airflow, often used for cooling. Igbt Module is a semiconductor device that combines the high-speed switching performance of a power MOSFET with the high-voltage/high-current handling capabilities of a bipolar transistor. A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple control signals, and a set of operating contact terminals. The switch may have any number of contacts in multiple contact forms, such as make contacts, break contacts, or combinations thereof.
Дата Публикации: 01-04-22
junlygroup.com
Описание: junlygroup.com Fastener Parts are hardware devices that mechanically joins or affixes two or more objects together. Bolts and Screws are fasteners. A bolt is a non-tapered fastener that uses a washer and nut to hold objects together. A screw is a tapered fastener that mates with an existing thread or creates its own thread in a material as it turns. For Non-standard Customization, customers need to send us detailed requirements for evaluation in writing as soon as possible. For products for special purposes, some parts require import or special processing requirements It may take longer to develop. Stamping Parts are forming and processing methods that apply external force to sheets, strips, pipes and profiles by means of presses and dies, which can cause plastic deformation or separation to obtain workpieces (stamping parts) of desired shape and size.
Дата Публикации: 01-04-22
inhealthnature.com
Описание: inhealthnature.com Monomer, a molecule of any of a class of compounds, mostly organic, that can react with other molecules to form very large molecules, or polymers. A standardized extract is created by "pulling out" (extracting) specific compounds from a plant. Standardized Saw Palmetto Berry Extract, for example, is extracted from the fresh berries of the saw palmetto tree. In many cases, standardized extracts are used in studies on herbs because the active ingredients can be monitored for consistency, whereas natural herb powders will vary. Grains, legumes and seeds are typical sources of Plant Powder, which are made by removing most of the fat and carbs while isolating the protein components. Essential oils are concentrated plant extracts that retain the natural smell and flavor, or “essence,” of their source. Essential oils are often used in aromatherapy, a form of alternative medicine that employs plant extracts to support health and well-being.
Дата Публикации: 01-04-22
ikoson.com
Описание: ikoson.com Wired Earphones receive an analog signal, which can handle more data than Bluetooth?. Therefore, it offers better sound quality. Ubiquity: As long as there's a 3.5mm input, wired headphones can connect to any audio source, from your dad's Walkman to your brand-new laptop. The neckband earphones allows for a combination of features you rarely ever see in in-ear headphones otherwise: active noise cancellation and Bluetooth wireless connectivity. Bluetooth earphones include a microphone and function as a headset for smartphones, but their primary purpose is music listening.
Дата Публикации: 01-04-22
hizypower.com
Описание: hizypower.com A nickel metal hydride battery (NiMH or Ni–MH) is a type of rechargeable battery. The chemical reaction at the positive electrode is similar to that of the nickel–cadmium cell (NiCd), with both using nickel oxide hydroxide (NiOOH). However, the negative electrodes use a hydrogen-absorbing alloy instead of cadmium. NiMH batteries can have two to three times the capacity of NiCd batteries of the same size, with significantly higher energy density, although much less than lithium-ion batteries. A lithium polymer battery, or more correctly lithium-ion polymer battery (abbreviated as LiPo, LIP, Li-poly, lithium-poly and others), is a rechargeable battery of lithium-ion technology using a polymer electrolyte instead of a liquid electrolyte. High conductivity semisolid (gel) polymers form this electrolyte. These batteries provide higher specific energy than other lithium battery types and are used in applications where weight is a critical feature, such as mobile devices, radio-controlled aircraft and some electric vehicles. The Lithium Battery Packs are modular and expandable and therefore can be adjusted for your application in industries like logistics, agriculture and others. Cylindrical Battery consist of sheet-like anodes, separators, and cathodes that are sandwiched, rolled up, and packed into a cylinder-shaped can. This type is one of the first mass-produced types of batteries and is still very popular. These cells are suited for automated manufacturing. Low Temperature Battery is a cold-weather performance battery, and the discharge capacity of Low temperature battery is up to 80% at 0.2C ratio under -40℃. High Temperature Battery ensures a significantly longer battery cell life at 75 °C until a remaining capacity of 80% is reached. In addition, the cell technology is able to remain available as a rechargeable battery cell for a longer period of time even at exceptionally high temperatures. A high rate battery generally refers to a lithium battery, and a lithium-ion battery is a high-charge battery that relies on lithium ions to move between a positive electrode and a negative electrode to operate. Ultra thin battery is a lithium ion polymer battery with a thickness of less than 1.5mm. With long years of experiences on custom special battery,Padre can design and produce variety of ultra thin battery which ranges from 0.4mm to 1.5mm. LiFePO4 batteries are best known for their strong safety profile, the result of extremely stable chemistry. Phosphate-based batteries offer superior thermal and chemical stability which provides an increase in safety over lithium-ion batteries made with other cathode materials. Lithium phosphate cells are incombustible, which is an important feature in the event of mishandling during charging or discharging. They can also withstand harsh conditions, be it freezing cold, scorching heat or rough terrain. A typical alkaline dry battery has a zinc anode and a manganese dioxide cathode. The electrolyte is a non-acidic basic paste. A typical electrolyte used in alkaline batteries is potassium hydroxide.
Дата Публикации: 01-04-22
btffabric.com
Описание: btffabric.com The use of selected man-made fibers and synthetic fibers, through a special spunlace process, spunlace synthetic leather substrate was launched to meet the needs of synthetic leather companies. PVC Leather Substrate is using a range of fabrics including woven, knitted, or non-woven fabric as the substrate, combined with a PVC foam layer, then process the surface. PU Leather Substrate means knitted, woven, or non-woven textiles are used as the substrate for PU (polyurethane) leather, which is subsequently coated with polyurethane resin. TPU Leather Substrate doesn't use any solvent, it changes the original calendering technology, directly heating by TPU particles into a liquid coating on the cloth, is completely environmentally friendly products. The characteristics of sponge composite fabrics, commonly used sponge composite fabrics are divided into three types: high density, medium density, and low density according to their structure. There are many different types of car upholstery fabrics available, but there are two overwhelmingly popular types. The first is leather upholstery fabric as well as materials that are designed to look or function like leather. On the other hand, there is cloth fabric, which is usually made by tightly weaving fibers together. Some vintage and custom cars use upholstery that is much less durable than either of these types, such as suede or velvet. It is also important to consider the design of the fabric, as different patterns are often more expensive. Modern Car Seat Fabric are made from materials like nylon and polyester, which offer a range of benefits and are surprisingly easy to maintain. Car Headlining Fabric is a composite fabric. A Composite fabric is the combination of materials used to create a new fabric, therefore benefiting from all the characteristics of each individual material. A headliner, is bonded to the inside of the cars hood. Headliners have a non-woven or foam backing. In addition to the above products, our company also produces Car Door Trim Fabric.
Дата Публикации: 01-04-22
adencn.com
Описание: adencn.com Energy recovery ventilation (ERV) is the energy recovery process in residential and commercial HVAC systems that exchanges the energy contained in normally exhausted air of a building or conditioned space, using it to treat (precondition) the incoming outdoor ventilation air. The specific equipment involved may be called an Energy Recovery Ventilator, also abbreviated ERV. Ductless ERVs provides fresh air, recovers the heat to save energy, and doesn't need ducts running to each and every room in the house. Commercial Energy Recovery Ventilators (ERVs) are the best choice for ventilating your home or workplace. These units are designed to provide fresh air into the building while exhausting an equal amount of stale air to the outside. Heart rate variability (HRV) is the physiological phenomenon of variation in the time interval between heartbeats. It is measured by the variation in the beat-to-beat interval. An air curtain is a fan-powered device that creates an invisible air barrier over the doorway to separate efficiently two different environments, without limiting the access of the people or vehicles. Centrifugal Air Curtains are highly acclaimed for their tough construction and low maintenance, showing fire prevention performance. These air curtains are specifically designed to maintain the temperature, hygiene and humidity during traffic movement through the doors. A fan filter unit (FFU) is a type of motorized air filtering equipment. It is used to supply purified air to cleanrooms, laboratories, medical facilities or microenvironments by removing harmful airborne particles from recirculating air. The units are installed within the system's ceiling or floor grid. Large cleanrooms require a proportionally large number of FFUs, which in some cases may range from several hundred to several thousand. Units often contain their own pre-filter, HEPA filter and internally controllable fan air distribution. As the name implies, ventilation fans are used to ventilate a residential or commercial space. This works to bring fresh air from the outside and into the enclosed space. It helps circulate air through the building or home, which prevents individuals from breathing stuffy, less oxygenated air. Without ventilation, you and other individuals will be left breathing air that is not fresh. At its simplest, a duct fan (also known as an inline duct fan or simply an inline fan) is a fan that is installed inside of a ventilation duct, rather than at the end point of a duct or through a wall. However, there are many variations of duct fans, and these should be understood before deciding whether or not this is a good way to meet your ventilation needs. Rectangular duct fan are intended for ventilation of medium size and large rooms where space is limited. The DV-SQ duct fans have been designed and manufactured in order to ensure the high efficiency, failure-free operation and direct connection to the ventilation duct.
Дата Публикации: 01-04-22