New customers get 10% OFF their first purchase! Subscribe to our email list for wholesale prices.

Shopping Cart

Your cart is empty

Continue Shopping

Our rockwool substrate products are worldwide insured by PICC Product Liability Insurance.

In order to ensure the growers benefit and promote the hydroponic rockwool substrates development, Greengrowmaster Upupper® rockwool grow media are worldwide insured by The People's Insurance Company (Group) of China Limited(PICC) of product liability insurance. In the process of using Greengrowmaster Upupper® products, for these situations such as production capacity is greatly reduced or poor planting quality or casualties caused by Greengrowmaster Upupper® product problems. The People's Insurance Company (Group) of China Limited(PICC) will be liable for compensation for customers.


As a hydroponic cultivation substrate popular in Europe and North America, rock wool can accurately control the nutrients and water required by each growth stage of plants during the planting process, improve the utilization rate of fertilizer and water, shorten each growth stage of plants, and achieve early market launch, and can greatly increase the yield of planting.


As people pay more and more attention to environmental protection and health products, the safety of growing media has become an issue that must be considered. Greengrowmaster Upupper® grow medium is an inorganic inert substrate, which is made of natural rock Basalt at a high temperature of 1500°C. It does not carry any harmful organisms such as pathogenic bacteria and insect eggs. It is cleaner than other substrates and reduces the use of pesticides from the source. After testing, the product does not contain toxic and harmful heavy metals such as mercury, arsenic, lead, and cadmium, and there is no precipitation of any substances during use, which will not cause any harm to vegetable and cannabis cultivation, providing the healthy, safe and green vegetables and cannabis products.


At the same time, Greengrowmaster Upupper® is also making its own efforts to prevent the safety problems that growers and customers may encounter during planting. We provide each customer with PICC product quality liability insurance to protect your planting.