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4-EMC crystal

Crystal 4-EMC is hot stimulant with strong quality and best price. Free samples can be offered to test quality. you can get 10% discount at your first order.

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4-CL-PVP Crystal

Free 4-cl-pvp samples is here waiting for you with strong quality, 5% discount at first order.

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Big crystal MEXEDRONE with strong quality and Factory Price,Free samples can be offered to test quality. The more you buy- the less you will pay, welcome to be one of our loyal customers to get free products.

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4-methyl-pentedrone (4-MPD) Crystal

Crystal 4-MPD with strong quality and Factory Price,Free samples can be offered to test quality. The more you buy- the less you will pay, welcome to be one of our loyal customers to get free products.

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Welcome to Contact us



90-96,Stone row bay road,Southern district,Hong Kong

About us

RUICHI BIOLOGICAL TECH.CO.,LTD is a worldwide leader since 2003 in the distribution of Research Chemicals as well as an international research chemicals manufacturing company. We work along side a highly professional laboratory mainly creating custom synthesis, research, and pharmaceutical chemicals.

At this time, we have warehouses in Hong Kong, China, and EU from where all products are dispatched. Our highly developed distribution network guarantees that all products you receive will be on time and will be sent to the most convenient locations for pickup. We also provide various shipping services that deliver products to our clients in various markets and in many different locations around the globe.

All products found on this website are sold for the sole purpose of research and education. None of our products is sold for human or animal consumption or for any type of illegal usage.

Our location

we have warehouses and production facility in EU, China and Hong Kong.

How to contact us?

We RUICHI BIOLOGICAL TECH.CO.,LTD have been serving our customers for over three years and are recognized as experts in the industry. We are here to provide you with the most efficient and high quality services and products to ensure your success. Contact us by:






We are proud of our large inventory. We are a leader in the industry and not a follower. We create research compounds that are considered to be unique thus the reason we are achieving differentiation. If you need any help with your order, you can contact your personal assistant or our sales managers. We are happy to provide you with the help you need to ensure you purchase the products you require.


Our Delivery Guarantee

We guarantee FRS shipping standards to be fast, reliable and safe delivered directly to your door. For more information, please check guaranteed delivery section.

Shipment Information

RUICHI BIOLOGICAL TECH.CO.,LTD offers worldwide shipping. All orders are dispatched within 24 to 48 hours after payment is received. You will receive a tracking number via email as soon as your order is shipped. This allows you to track your package. You can use your tracking number on our website as well as on your local express courier. All of the packages are shipped in discrete and safe containers.

Is a tracking number available for my order?

Yes, after receiving payment for your order you will receive a tracking number via email within 24-48 working hours.


Free samples

RUICHI BIOLOGICAL TECH.CO.,LTD can provide free samples for some products.

Bulk wholesale orders delivery

We do offer special guaranteed expedited delivery in the case of bulk wholesale orders for specific countries. If your company plans to make wholesale orders, please contact us for more information.


Payment methods

RUICHI BIOLOGICAL TECH.CO.,LTD offers various payment methods, which include:

1.Western union


3.Bitcoin (www.bitcoin.org)


Service Online

Service Online