There are few drier suppliers can determine their own products oil removal ability, it depends on oil filter to perform the task.
很少有干燥器供应商能够明确自己产品的除油能力，这有赖于油蒸气过滤器执行该任务。
2
Therefore in the refrigerant liquid pipe must be installed before the filterdrier.
因此在冷媒供液管前必须装设干燥过滤器。
3
After many years passed, we have developed all kinds of freezing and air-conditioning valves, fittings, tools, freezers, freezer handles, hinge, and filterdrier and so on, more than 3000 categories.