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Dear Customers, I'm glad to inform we attended the DEMA show 2021 in Las Vegas. After the termination of the show in 2020, we are more excited than ever to see the valued customers face to face this year! During this year's DEMA Show, we had shown more new products. If you are interested in our new products, welcome to contact us.

Choose the material It`s not just avid divers that need to know how to choose a scuba mask. When people take up scuba diving or if they`re planning a vacation to the tropics and plan to do a little snorkelling the first piece of equipment they typically invest in to make either a more enjoyable experience is a decent mask. As you may know most important feature of a good mask is that it fits the individual using it well. But how do you tell if a mask fits before you get it in the water? And, aside from fit, what should one consider when shopping for a new diving mask? The difference between PVC rubber and silicone gel Different in material: PVC materials include common materials and environment-friendly materials, also known as ATBC-PVC, while silica gel can be certified by ROHS, which is environmentally friendly. Different in the process: PVC products are made of polyvinyl chloride and oil together with color paste, and its raw materials are made by heating and cooling microinjection epoxy process. But the silica gel only needs to use the silica gel to add the color masterbatch to suppress and deploy in mixing machine, then put them in the mold by the heating and cooling to take shape. Different in character: Silicone products are more cold-resistant and more heat-resistant than PVC products. Tableware made of silicone can be heated in a microwave, while PVC can`t. Different outside: From the appearance, PVC products are rougher than silicone products, silicone products have a smooth and shiny surface. Different in touching: According to the hand feeling, the silicone product is soft with good toughness and elasticity, while the PVC soft rubber is relatively less hard. The softness and hardness of both can be adjusted, but the PVC does not have tenacity. Different in burning: Silica gel products are generally transparent, with small burning smell and powder, while PVC products will turn black after burning and smell bad when burning. Different in the cost: The raw material price of PVC products is low, which is made of synthetic materials. Silica gel is more expensive than PVC products in production and manufacturing.

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What is liquid silicone rubber? Liquid silicone rubber (LSR) is a two-part silicone-based polymer joined together by a chemical bond. It`s most commonly used to create injection molded parts for products used in industries such as automotive, food, appliances, textiles, and consumer goods. When the polymer is injection molded and heated, the catalyst initiates a cross-linking progression. This progression gives the substance permanent strength and shape after the curing process. The resulting material is strong and durable, making it ideal for a variety of products including: Appliance hardware Automotive parts Electronics interfaces O-rings What are the benefits of using liquid silicone rubber? 1. Superior heat stability LSRs can withstand temperatures up to 180 °C with no melting or creeping. They have become a popular option for heavy-duty and automotive applications like seals and gaskets. 2. Low-temperature flexibility Thermoplastic elastomers can lose their flexibility at extreme temperatures. At low temperatures, they become harder and more brittle until they eventually crack. LSRs, however, remain flexible at temperatures as low as -50 °C. They are an excellent choice for any products that need to operate in a low-temperature environment. 3. Aging resistance Aging resistance is an important factor in determining the right material for your injection molding process. Cured LSR materials provide excellent resistance to UV rays, weathering, and aging. They are ideal for use in applications where long-term exposure to the elements is a concern. 4. Chemical resistance Thermoplastic elastomers can resist chemicals in a broad range of applications. But they only offer chemical resistance in moderate temperature ranges. LSR offers low water absorption and excellent resistance to common chemicals even when exposed to extreme temperatures. 5. Low compression set A low compression set means that materials can resist permanent deformation under a constant strain. LSRs have a very low compression set, typically in the range of 15%-20%. They are able to retain their elasticity even when compressed for extended periods of time and subjected to different temperature ranges. 6. Great shelf life reliability The shelf life of liquid silicone rubber is one of the key factors contributing to the ease of use in a manufacturing environment. Most LSR products are available with a shelf life of at least one year. 7. Electrical resistance Electronics manufacturers need to know that the materials they are using can resist corona discharge. LSR offers high resistance to electrical stress without impacting the conductivity of the final product. For this reason, these materials are commonly used in high-voltage applications and electrical parts. H.M. Royal is proud to offer a wide variety of ELASTOSIL® liquid silicone rubber grades from Wacker to meet the specific requirements of your application. ELASTOSIL products are available in self-adhesive grades and can be over-molded with engineering plastics, metal, glass, and other materials. 8. Leisure Electron In addition to transparency and high tear strength, silicone rubber parts are pleasant to touch with high skin feel and they are physiologically inert to living tissues. Hence, widely used in applications such as swimming goggles, snorkels, mouthpieces for players, bands etc.

Understanding the EU coronavirus traffic light system In order to provide travelers in Europe with a better overview of the corona infection situation and possible restrictions, the EU has introduced a coronavirus traffic light system . According to this, the EU is divided into green, orange and red zones. In addition, there is the color gray for regions from which not enough data are available. Currently, the color red dominates the continent. If you plan to travel, the EU Commission's Re-open EU App can also help. It provides up-to-date information on the health situation, safety precautions, and travel restrictions for all EU countries and the members of the border-free Schengen area, which includes Iceland, Liechtenstein, Norway, and Switzerland. Please note: The information listed here is not exhaustive, serves as a reference only and is subject to change at any time.

Basic Snorkeling Tips Swim with a friend. Many accidents occur when people are alone. But swimming with a friend won't help if you don't stick together and watch out for each other. Make sure your equipment is good and that you are familiar with it. A correctly fitting mask, fins, and snorkel make ocean enjoyment and survival much easier. Take care of yourself. Make sure you are well hydrated when you enter the water, use sunscreen, and don't push yourself beyond your comfort or skill zones. That means you should not push your partner beyond their comfort and skill level. Be aware of the ocean and yourself within it. Know what currents are present, the size of waves and swell, and wind speeds, and any other potential hazards. And continue to be aware of these things throughout your snorkel, because they will change. This also means being aware of boat traffic, as it is a real hazard. Don't touch marine life. This is for your own good and the good of the sea life.

Are full face snorkel masks safe to use? Full face snorkel masks and CO2 build up You might be thinking: `Wait, carbon dioxide build-up? Danger of unconsciousness? That doesn`t sound safe`- and you`d be right! So what`s the deal, here? How can full face snorkel masks be safe for use if they pose the risk of inhaling carbon dioxide? The answer is simple: they don`t. And again, it all comes back to whether you`ve purchased your full face snorkel mask from a dedicated manufacturer. First of all, you want to make sure you have a good idea of how a full face snorkel mask works before heading out to sea. Simply chucking on the mask and breathing whichever way you like won`t do here. Try to be aware of the following: When human beings breathe in and out, we inhale oxygen and exhale carbon dioxide. When we`re exercising, our body needs more oxygen to provide us with energy, and so our breathing increases. While we breathe faster, we also have more shallow breaths, and this is where CO2 becomes an issue. There`s more carbon dioxide in our exhalations than there is oxygen in our inhalations. If we`re constantly exhaling in an enclosed space then we won`t be able to exhale deeply enough to push out all the carbon dioxide. It`s like breathing into a plastic bag – the CO2 will all build up inside the enclosed space until it becomes toxic, fills up the entire space, and we all fall unconscious. But any self-respecting full face snorkel mask manufacturer would have taken this into account Shenzhen RKD Outdoor & Water products Co., Ltd, which is the only manufacturer focus on all-in-one full-face snorkeling / scuba masks.