Best Lyusejiayuan in 2026

Latest Generation of Formaldehyde Air Rapid Test Kit for home, office, automobile etc. indoor air quality test.

Rapid and semi-quantitative testing of air formaldehyde without the need for any equipment.

Great for on-site testing of formaldehyde inside a car, a room or furniture.

SO MANY TOYS IN A SNAP: Make dozens of cool electronic gadgets - all from one box! A safe and fun way to introduce children ages 8+ to the basics of electrical engineering! Build exciting projects and toys using the included colorful instruction book!

PROJECTS THEY'LL LOVE: So many fun electric-powered projects you can make and play! Ages 8 to 108 will love building 100+ projects! Have fun while building practical skills and learning the basics of circuitry. Build a flying saucer in a snap and watch it take off and sound the alarm! Kit includes 29 Snap Circuits parts.

GREAT GIFT Give the gift of learning and fun this holiday season! Snap Circuits kits will keep kids busy and having fun all year round. Combine with other Snap Circuits kits for even more projects!

Free PDF tutorial(more than 22 lessons) and clear listing in a nice package

The most economical kit based on Arduino platform to starting learning electronics for those beginners who are interested.

Lcd1602 module with pin header (not need to be soldered by yourself)

Perfect Sewing Kit : The kit contains all the necessary tools that are required for performing basic repairs - be it a needles, threads, scissors, buttons, thimble, threader tools, seam ripper and all sewing tools, everything neatly packaged ready for your use.

Easy to Use : Items won't fall out when you open the case, needles in separate closed box for safety, and other items securely tucked in place with attractive black elastic bands. A kit that in a true sense makes your life easier.

Smart and Compact : Compact design making it convenient to carry in style anywhere you travel. With this kit in your bag, you will never have to find a tailor for the basic repairs, be more self-sufficient and take care of small repairs yourself.

DISCOVER CRYSTAL TREASURE - Break open these rocks to reveal amazing crystals inside! Geology doesn’t get more exciting than breaking open rocks and finding crystal treasures. Ag great STEM activity that also makes an excellent gift for girls and boys!

COLORFUL VARIETY – Geodes can form with a wide variety of crystals inside. These geodes have been hand-selected to bring you the best variety available.

100% NATURAL GEODES – These real specimens may be as big as a tennis ball, or as small as a ping-pong ball. Kids will love the thrill of cracking them open to see the natural beauty inside. This STEM activity emphasizes fun and discovery!

YOUR KIDS WILL ENJOY HOURS OF FUN - This extra-large dig brick has 20 incredible gemstone and fossil specimens, allowing your kids to experience the thrill of discovery over and over again. It's sure to become one of their favorite educational activities

REAL SPECIMENS YOUR KIDS WILL TREASURE - This digging kit is so exciting because every specimen is genuine. Your children will uncover genuine gemstones and fossils that are millions of years old, making this a truly unforgettable educational toy

EVERYTHING YOUR CHILD NEEDS – This National Geographic science kit has all the tools your child needs to dig like the pros! In addition to the dig brick, there’s a chisel, brush, and magnifying glass. Hands-on learning has never been so fun

Vegan, Non-GMO, Gluten-free & Gelatin-free: Each bottle of Goli contains 60 delicious, vegan, non-gmo, gluten-free & gelatin-free Apple Cider Vinegar gummies, which makes them suitable for almost any lifestyle.

Made in the USA with locally and globally sourced ingredients. Goli Gummies are made in allergen-free, cGMP certified facilities in the United States with local and globally sourced ingredients to ensure that our products are reputable and of the highest quality standards.

Patented Formula, Essential Vitamins, Great Taste: Our patented formula contains essential Vitamins B9 and B12 to help support cellular energy production, immune function, heart health, healthy nutrient metabolism, a healthy nervous system and overall health and wellbeing. Apple Cider Vinegar has traditionally been used for digestion, gut health and appetite. Our unique flavor profile combined with essential vitamins makes Goli ACV Gummies a delicious addition to your daily health routine.

The MEGA complete starter kit with more than 200pcs components, premium quality and 100% Compatible with Arduino IDE

Free pdf tutorial in the cd (33 lessons)

Lcd1602 module and gy-521 sensor module with pin header ( no need to solder by yourself)

EXCAVATE INCREDIBLE PYRITE – Excavate genuine pyrite specimens from each Gold bar-shaped dig brick in the kit and learn more about the Gold Rush and Fool’s Gold in the full-color learning guide

MADE TO SHARE – This Fool’s Gold Dig kit has enough individually-wrapped dig bricks and digging tools to share with friends and classmates. A great collaborative education activity in classrooms or at parties

INSPIRING SCIENCE – The activity kit encourages a deeper love of scientific discovery and earth science, allowing kids to get a hands-on experience excavating and identifying rock specimens

The perfect companion for indoor environments, allowing you to monitor CO2 levels, temperature, relative humidity, and atmospheric pressure in real-time

Easy for anyone to use – the color coding and the optional buzzer warns you when the CO2 concentration gets too high

Power-efficient e-ink display ensures super long battery life for this wireless device (up to 4 years)

KNOW BEFORE YOU GROW | Grow the healthiest, sustainable lawn and garden with the most accurate and easy to use professional soil test kit on the market

ROOTED RESULTS | Unlike at home ph meters and test strips, our mail-in professional lab analysis measures 13 plant available nutrient levels including Nitrogen and pH

FOR ANY GROWING SCENARIO | Tests any soil type and gardening condition - lawn & turf, vegetable gardening, flowers, compost, trees, vines, ornamental landscape, house plants, soil-less media or hydroponics

【Mechanical Gears】Build a 254pcs 3D wooden puzzle marble run set with big waterwheel lifter and funnel track. Full of gear trains, cams, ratchets and cranks. Loads of fun to rotate the handle and see marbles run crazy on different tracks!

【No Glue Needed】This 3D puzzle is made of durable plywood uses precise laser cutting, so parts fit smoothly together. No tools or glue are required. Rewarding building kit for anyone.

【Premium Pakcage】The model kit comes with all accessories and a pictorial instruction book. Friendly to a beginner of 3D wooden puzzles. Ideal packaging as a gift to friends or family at birthday, Thanks Giving or Christmas.

One bottle of each PuriTEST 10K, 14K, 18K, 22K, Platinum and Silver test acid

4" Scraper / Cutter and Easy to Use Instructions Included!

Premium PuriTEST brand stone included in box.

High Absorption Liquid: The liquid zinc allows more effective absorption than other forms

Health Benefits: Support healthy immune system and highly active athletes with stressed zinc level

Organic Ingredients: PR Labs uses high-quality ingredients and no stearates to formulate products

7 sketch pencils and 3 pigment liner pens let you lay down sharp lines or soft shades. The most widely used graphite drawing pencil degrees are included. From soft to hard: 8H, 6H, 4H, HB, H, 2H and 4H. Pen widths are 0.3mm, 0.5mm and 1mm

Drawing pencils and art pens for everyone, from teens, beginners to established professionals. This compact drawing supplies kit is the perfect introductory or on-the-go travel set

Dual hole metal sharpener means there's never a dull moment (see what we did there?) for your artist pencils. A high polymer eraser ensures smooth, precise cleanup and helps create fading or translucent effects

RELIABLE RADON RESULTS: As radon levels fluctuate daily, continuous long-term measuring is necessary. Airthings Wave Plus measures radon accurately and reliably

CLEAN AIR SENSORS: Radon, Carbon Dioxide (CO2), VOCs (airborne such as kitchen gases, fumes and cleaning products), humidity, temperature and air pressure sensors allow you to gain full visibility into six key indoor air factors

EASY AND CLEAR RESULTS: Connect via Bluetooth to the Airthings App or log in to the Airthings Dashboard online for detailed insights into your air

JSP Premium Gold, Silver & Platinum Testing Solutions 6 x 1/2oz bottles

2 x Genuine PuriTEST Premium 2x2" PRO TOUCH Testing Stone

FREE GIFTS: 5 Gram .999 Gold Clad Test Bar & 5 Grain .999 Silver Test Bar

【Owl Clock Puzzle】This ROKR clock is a self-assembly puzzle and a real clock when assembled. It uses quartz movement and runs silently. 1.5V AA battery is required (not included).

【Wind-up Timer】The 3D wooden puzzle has a 30-minute timer on its back. You can set countdown times for cooking or other events. The classic tick-tock pendulum runs upon wind up.

【No Glue Required】ROKR mehcanical model kit is connected all by mortise and tenon. Precise laser-cutting ensure parts fit well together. Just follow the instruction step by step, and you will make it with proud.

Humans have been working on metal since the dawn of recorded history, it was handmade but it is very attractive. We love it, and we've focused on metal smelting and forging for years. You are ready to begin your metalworking but aren’t sure where to start? Don’t worry, as GONGYI team, we’ve got you covered.

Heating fast, melt aluminum in about 10 mins.

This Propane Smelting Furnace works efficiently with melting Glass, Copper, Aluminum, Gold, Silver and other Scrap Metal Recycle (Can't melt steel). Suitable for DIY, jewelry processing applications.

Fully customizable ppm deadband and CO2 set point allow flexibility in programming

Trend chart records CO2 levels per minute, hour, day and week for accurate analysis of CO2 distribution

Adjustable trend chart zoom levels let you trace your ppm levels

【ILLUMINATED WORLD GLOBE】180pcs 3D puzzle for adults to craft a 11.5' tall antique-look globe with wooden base and LED. Beautiful for any bedroom or dorm.

【SOFT LIGHT, SECURE AIR】This wooden puzzle comes with a power line to connect electricity. The reassuring light gives kids a sense of security at night. Both practical and decorative once built.

【EASY TO ASSEMBLE】 No glue needed. Made of non-toxic and durable plywood. Comes with a pictorial manual and precise laser-cut parts. Any question during assemby you can aslo contact our customer service.

⚛️ ACCURATE: Carbon Monoxide (CO) gas detector, 0-1000ppm with 1ppm resolution. USA NIST Calibration. Turn ON and GO.

🌇 DETECT: Electrochemical cell sensor with error better than ≤±5% F.S. and response time: T<30s. Zero and span calibration options. Comes factory calibrated.

🎆 ALARMS: Adjustable audio, visual, and vibration alarms alert when preset levels are reached. Alarm digital time stamp and logging.

GOLD, SILVER, AND PLATINUM JEWELRY TEST KIT

HANDCRAFTED WOOD STORAGE BOX TO PROTECT AND PROLONG TESTING SOLUTIONS

AUTHENTIC GTE 2''x 2'' JEWELRY TOUCHSTONE FOR SAFE TESTING THAT WON'T DAMAGE YOUR JEWELRY

PuriTEST 3-Pack Gold Test Kit 10k, 14k & 18k Gold Acid Testing Solutions

1/2oz bottles excellent for hundreds of tests!

2x2" Premium PuriTEST PRO Test Stone

FUN, FAST, AND ACCURATE! DETERMINES THE KARAT OF GOLD, SILVER, & PLATINUM JEWELRY IN SECONDS!

ALL-IN-ONE GOLD, SILVER, PLATINUM TESTING & APPRAISAL KIT

2 AUTHENTIC *LARGE* GTE 2''x 4'' JEWELRY TOUCHSTONES FOR SAFE TESTING THAT WON'T DAMAGE YOUR JEWELRY

🏕️ [High-precision CO2 Sensor]: The CO2 detection adopts the most advanced sensor of Swiss Sensirion's unique PASens technology, and adopts the photoacoustic detection principle to perform accurate and reliable measurements in a wide range of concentration areas and applications.

🔔 [Carbon Dioxide Concentration Alerts]: The CO2 concentration alert value can be customized to make our life, work or production environment safer.

💧 [Temperature and Humidity Monitor]: Temperature and humidity are closely related to human body, plants or storage environment. This air quality tester has the function of real-time monitoring of temperature and humidity.

✅ [PROTECTS EVERY BREATH] – When it comes to the health of your family, AirKnight knows that every breath counts. Our 9-in-1 air quality monitor is equipped with powerful sensors that detect the main 8 kinds of air pollution (CO2, VOCs, Formaldehyde, AQI, PM2.5 & PM10 Dust Particles, & more) in REAL-TIME, all displayed on one sleek, clear LCD screen.

✅ [SIMPLE, FAST SETUP] – No complicated app, badly written instructions or Wi-Fi required for one of the most premium indoor air quality meters. Our device was specially designed to be operated by anyone, anywhere, so you can keep your space safe without a tech-induced headache. An instructional video is included also, just in case.

✅ [PORTABLE FOR EVERYWHERE, ANYTIME USE] – Featuring a heavy-duty 3000 mAh rechargeable Lithium-Ion battery, your AirKnight AK1000 portable air quality monitor is designed to travel with you, monitoring your air quality for hours at a time on a single charge. Never go unprotected again!

Indoor CO2 Monitor: Compact size Body with hollow back design for carring and airflow. Big colorful LCD digital screen for people easy to identify and read. Not only monitoring the CO2 content, also can test the temperature & humidity. Air quality monitor is Keeper of family health, Perfect for home interior, such as living room, baby room, classroom, office and which closed places etc.

Necessity of Air Quality Monitor: Carbon dioxide (CO2) is not harmful to human body when it is low, but when it overs a certain amount, it will affect the breathing of humans (and other organisms). If serious, life is threatening. Thus, we have to monitor the CO2 content of air for keeping health.

Advanced NDIR Technology: Mini CO2 meter uses high precision NDIR sensor technology to detect carbon dioxide content accurately and quickly. and it can hazard assessment, when CO2 of air exceed the setting alarm value(alarm value: 1000 PPM), it will warn to remind people to open the window or turn on air purifier for keeping balance of air.

Measuring Range CO2: 0~9999ppm

Temperature Range: -10.0~60.0°C (14~140°F) /Resolution: 0.1°C/°F / Accuracy: ±0.6°C / ±0.9°F

CE Marking, passed the standards and had been approved by European Directives for health & safety

RETINOL ANTI-AGING STARTER KIT – Perfectly-Sized Products Specially Selected to Introduce Your Skin to the Beautiful Benefits of the Original Retinol Skincare Line

AGE-DEFYING SKINCARE ON-THE-GO – Ideal for Travel or Anytime You Want to Conveniently Take Your Anti-Aging Skin Renewal Care Routine with You

CURATED COLLECTION – Cleanse, Treat, Repair & Hydrate with Top Selections from Our Anti-Aging Skincare Regimen; Chosen for Noticeable Results, Decision-Free