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Multi functional fan safety helmet

Shanghai Sunland Industrial Co., Ltd is the top manufacturer of Personal Protect Equipment in China, with 20 years’experience. We are the Chinese government appointed manufacturer for government power,personal protection equipment , medical instruments,construction industry, etc. All the products get the CE, ANSI and related Industry Certificates. All our safety helmets use the top-quality raw material without any recycling material.

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Solutions to meet different needs

We provide exclusive customization of the products logo, using advanced printing technology and technology, not suitable for fading, solid and firm, scratch-proof and anti-smashing, and suitable for various scenes such as construction, mining, warehouse, inspection, etc. Our goal is to satisfy your needs. Demand, do your best.

Highly specialized team and products

Professional team work and production line which can make nice quality in short time..

We trade with an open mind

We abide by the privacy policy and human rights, follow the business order, do our utmost to provide you with a fair and secure trading environment, and look forward to your customers coming to cooperate with us, openly mind and trade with customers, promote common development, and work together for a win-win situation..

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The professional team provides 24 * 7 after-sales service for you, which can help you solve any problems

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Multi functional fan safety helmet
The Human Face and the Golden Ratio - The Golden Ratio ...
The Human Face and the Golden Ratio - The Golden Ratio ...

The ,human, face is based on Phi and Golden Ratio proportions. The ,human, face abounds with examples of the Golden Ratio, also known as the Golden Section or Divine Proportion. We’ll use a succession of golden ratios to create a golden ruler to understand design in the face: The ,head, forms a golden rectangle with the […]

How to Calculate the Volume of a Person | Sciencing
How to Calculate the Volume of a Person | Sciencing

29/4/2018, · Make sure the line is high enough to allow you to immerse your entire body, including your ,head,. When you're underwater, have a helper mark the new water level. The ,distance between, the lines is the depth of the water you displaced, and when you multiply this by the length and width of the tub, you get the volume of the water – and your body.

Space Planning: How Much Commercial Space Do You Really ...
Space Planning: How Much Commercial Space Do You Really ...

Optimally the new ,space, should be sized to accommodate all the staff projected through the midterm in the lease, e.g. 30 people are expected on move-in and your firm should grow to 50 by the end of the lease, then ideally you should plan a ,space, for about 40 people.

Social distancing in laboratories and continuity guidance ...
Social distancing in laboratories and continuity guidance ...

19/3/2020, · Ensuring at least 6 feet of ,distance between, individuals; Minimizing the number of individuals in any ,space, as ,much, as possible; Increasing disinfection of work surfaces and high-touch surfaces to at least daily; Ensuring that staff wash hands often- prior to leaving the laboratory and when removing gloves and other personal protective equipment.

5 Time and Distance - The Feynman Lectures on Physics Vol ...
5 Time and Distance - The Feynman Lectures on Physics Vol ...

In this chapter we shall consider some aspects of the concepts of time and ,distance,.It has been emphasized earlier that physics, as do all the sciences, depends on observation.One might also say that the development of the physical sciences to their present form has depended to a large extent on the emphasis which has been placed on the making of quantitative observations.

The Proportions of the Head - Artyfactory
The Proportions of the Head - Artyfactory

The eyes are situated approximately half way down the ,head,. If you view a ,head, from the front, the ,distance, across the eye is similar to the ,distance between, the eyes. The ,distance between, the eyes is similar to the breadth of the nose. As you can see in the illustration, these distances work out at approximately one fifth of the width of the face.

How to Measure Distances in the Night Sky | Space
How to Measure Distances in the Night Sky | Space

In such unusual cases, we would measure the ,distance between, the two objects in tenths of a degree or in more extreme cases, in arc minutes. One degree, for instance, is equal to 60 arc minutes.

Human Body Ratios - Scientific American
Human Body Ratios - Scientific American

An example of a ,human, body ratio is a person's arm span—the ,distance, from the middle fingertip of the left hand to that of the right hand when stretching out both arms horizontally—to their ...

What Is the Average Size of the Human Head?
What Is the Average Size of the Human Head?

27/5/2020, · Through collected data and reports, it has been determined that the average ,human head, measures 6-7 inches in width and 8-9 inches in length. The average circumference of the ,human head, is 21-23 inches. There are several factors that determine the exact size of each individual’s ,head,. These uncover some of them.

Evaluation of Pattern Recognition Methods for Head Gesture ...
Evaluation of Pattern Recognition Methods for Head Gesture ...

virtual reality glasses/,helmets, [5]. ,Head, gestures require a pattern recognition algorithm that would ... effective methods for ,head, motion analysis and for similar ,human, motion evaluation tasks. 1.1. ,Head, Motion Analysis and Classification ... because in many cases ,distance,-based classifiers perform better in lower dimensional ,space,.